SteamOS 3.8.7 Beta Adds Official Intel Handheld Support

SteamOS 3.8.7 Beta, released 4 June 2026 to the Steam Deck Beta and Preview channels, brings the first official Intel handheld support in SteamOS’s history, with controller mapping for the MSI Claw family and initial firmware for upcoming Intel machines. The 3.8.8 Beta followed five days later and fixed an issue where MSI Claw controls stayed stuck in desktop mode. YouTuber ETA Prime tested the new build on a Lunar Lake MSI Claw 8 AI+ and reported SteamOS running well overall. Valve has now patched the one minor controller menu bug ETA Prime flagged during the run.

What 3.8.7 and 3.8.8 Change for Intel Handhelds

Valve’s release notes for SteamOS 3.8.7, carried on the SteamOS 3.8.7 and 3.8.8 official release notes page, list two Intel-specific changes on top of the broader 3.8 Beta additions. The build adds initial firmware for upcoming Intel handhelds and fixes Bluetooth that was not working on some Intel machines. A separate item improves UI behavior when the device is low on battery and plugged into a slow charger, a common pain point for handheld users on the go.

The 3.8.8 Beta then targeted one MSI Claw-specific issue, fixing desktop-mode controls that stayed stuck after launch. The MSI Claw controller support is part of the wider SteamOS 3.8 Beta, not a 3.8.7 exclusive, with the release notes naming four Claw models: A1M, 7 AI+ A2VM, 8 AI+ A2VM, and A8 BZ2EM.

• Fix Bluetooth not working on some Intel handhelds (3.8.7)
• Add initial firmware for upcoming Intel handhelds (3.8.7)
• Improved UI behavior when low on battery on a slow charger (3.8.7)
• Add controller support for MSI Claw devices (A1M, 7 AI+ A2VM, 8 AI+ A2VM, A8 BZ2EM) (3.8 Beta base)
• Fixed an issue where MSI Claw controls would stay stuck in desktop mode (3.8.8)

ETA Prime Ran SteamOS on a Lunar Lake MSI Claw 8 AI+

ETA Prime’s test is the first third-party proof that SteamOS 3.8.7 holds up on Intel silicon. TweakTown reported ETA Prime tested the beta on a Lunar Lake-based MSI Claw 8 AI+ and SteamOS functioned well on the Intel hardware, with one minor bug. The chip inside the existing Claw 8 AI+ is Intel’s Lunar Lake silicon, with Arc integrated graphics. The result is SteamOS running on a shipping Intel handheld, the kind of machine consumers can buy today.

The TweakTown report flagged a single controller menu bug during the run. Valve addressed that exact symptom in 3.8.8, an MSI Claw desktop-mode control fix shipped five days after 3.8.7. The turnaround is the same five-day cadence Valve has used for other 3.8 hotfixes this cycle.

The test also surfaced the OS’s general direction on Intel: the same SteamOS 3.8 Beta rewrote the controller paths the Claw relies on, cutting handheld controller input latency from 5-8ms to 100-500us per the release notes, which is part of why a non-Steam Deck handheld now feels closer to the Deck’s controller experience.

The MSI Claw 8 EX AI+ Is the Harder Test

The MSI Claw 8 AI+ runs last year’s silicon. The MSI Claw 8 EX AI+ is the harder test, and it lands at the end of June with Intel’s first chip designed for handhelds. A PC Gamer pre-Computex hands-on called the new model “the first of [MSI’s] handhelds that really feels like a finished, premium product.”

So far we’re starting with the G3 Extreme and we’re going to be sticking with this one in our first wave.

MSI’s product manager told PC Gamer the company is sticking with the G3 Extreme across the first wave. The chip is the Intel Arc G3 Extreme, the top of the new G3 range Intel built for dedicated handhelds.

That gives the device a 14-core processing array (one pair of Cougar Cove Performance cores, eight Darmont Efficient cores, and four low-power E-cores) plus a 12 Xe core Arc B390 integrated GPU, part of Intel’s Core Ultra Series 3 Panther Lake family. The screen is an 8-inch 1920×1200 IPS-Level panel with 48-120Hz VRR and 500 nits typical brightness. The handheld pairs that display with up to 32GB of LPDDR5x-8533 memory and a 1TB PCIe Gen 4 SSD. It runs on the same 80 Whr battery as the previous Claw, weighs 785g, and ships as a Windows 11 Home device.

The pre-Computex briefing pegged the price at around $1,500, while a Tom’s Hardware report noted a $1,699.99 Best Buy page for a 32GB/1TB configuration that has since been pulled. MSI has shipped the new device as a Windows 11 Home handheld, not a SteamOS handheld. MSI’s own SteamOS test, the company told PC Gamer, found technical barriers on the Panther Lake hardware.

MSI Claw 8 EX AI+ key specs (per PC Gamer and Tom’s Hardware):

• CPU: Intel Arc G3 Extreme (14 cores: 1 pair of Cougar Cove P-cores, 8 Darmont E-cores, 4 low-power E-cores)
• GPU: Intel Arc B390, 12 Xe cores, integrated
• Display: 8-inch 1920×1200 IPS-Level, 48-120Hz VRR, 500 nits typical
• Memory: Up to 32GB LPDDR5x-8533
• Storage: 1x M.2 2280 PCIe Gen 4×4 SSD (1TB at launch)
• Battery: 80 Whr
• Weight: 785 g
• Price: around $1,500 (MSI to PC Gamer); $1,699.99 pulled Best Buy listing (Tom’s Hardware)
• OS: Windows 11 Home

Which Other Handhelds Get Better SteamOS 3.8 Support?

The MSI Claws are the headline, but the 3.8 Beta extends controller, firmware, and reliability work to a long list of non-Deck devices. Most of the named devices are AMD-based, and Valve’s pre-existing work for those handhelds is what made adding the Intel MSI Claws possible.

The list runs from OneXPlayer, GPD, and Anbernic through Lenovo’s Legion Go family and Asus’s ROG Xbox Ally series. The SteamOS 3.8 Beta notes call out reduced handheld controller input latency, SD card reliability improvements for the Legion Go and Asus ROG Xbox Ally lines, and added controller, TDP, and speaker audio support for the Asus ROG Xbox Ally series. The 3.8 Beta also brings initial support for upcoming Steam Machine hardware, the same code path that handles third-party handhelds.

Valve is also pushing the OS toward “Powered by SteamOS,” a branding layer for third-party handhelds and PCs. The 3.8 release notes prep the boot menu, firmware update plumbing, and update channels those machines will need.

The Gaps SteamOS 3.8 Doesn’t Fix on Intel

The MSI Claw 8 EX AI+ does not get a SteamOS path in the 3.8 Beta. MSI’s product manager told PC Gamer the company “tested SteamOS after Intel recommended giving the Claw a whirl with alternative operating systems” and that “with SteamOS, there are still technical barriers.” That puts Panther Lake handhelds in a different bucket from the Lunar Lake MSI Claw 8 AI+ ETA Prime tested, even though both are Intel silicon. Valve’s 3.8.7 release notes do add initial firmware for “upcoming Intel handhelds,” which is the closest thing to a road sign for Panther Lake support.

The new build is also still a beta, with the 3.8.7 release notes telling users to opt in via Settings > System > System Update Channel, the same beta-and-preview path the rest of the 3.8 series has used since the first preview landed in March 2026. Valve has published no stable release date, and GamingOnLinux’s editor predicted 3.8 will leave beta “when the Steam Machine releases or close to it.” That prediction is the editor’s, not Valve’s.

• No SteamOS support for the upcoming MSI Claw 8 EX AI+ (Panther Lake) yet
• Bluetooth fix is partial, scoped to “some Intel handhelds”
• Initial Intel firmware is preparatory, not full support
• SteamOS 3.8 still in beta, no stable release date from Valve
• Steam Machine release tied to 3.8 stable per third-party prediction, not Valve

Why SteamOS 3.8 Has Been in Beta Since March

The SteamOS 3.8 Beta opened in March 2026 with broad changes to the desktop, the controller layer, and the update path, per the release notes carried in the Steam Deck announcements. Each subsequent beta has added a small batch of fixes since. The 3.8.7 Beta is the largest Intel-specific change so far. Valve has not committed to a stable release date, though GamingOnLinux’s editor expects 3.8 to leave beta when the Steam Machine ships this summer.

The Steam Machine is a separate product line Valve has been teasing, and the 3.8 Beta carries “initial support for upcoming Steam Machine hardware.” That makes the SteamOS 3.8 cycle the bridge between the Steam Deck’s AMD-only era and a more open SteamOS that runs on multiple handhelds, the Steam Machine, and the MSI Claw 8 AI+, the first Intel device to ship on that bridge in beta.

The larger question is whether Panther Lake handhelds ship with working SteamOS from day one. MSI’s own testing on the Claw 8 EX AI+ found “technical barriers,” which leaves the first Panther Lake handheld waiting on a future SteamOS update. The Computex 2026 awards noting Intel Arc G3 Extreme’s handheld gaming lead over AMD are the public marker for how much is riding on Panther Lake’s mobile gaming story. SteamOS 3.8.7’s “initial firmware for upcoming Intel handhelds” and the 3.8.8 desktop-mode fix are what Valve has shipped in the meantime.

Frequently Asked Questions

What is SteamOS 3.8.7 Beta and what did it add for Intel handhelds?

SteamOS 3.8.7 Beta is a SteamOS 3.8 channel update released to the Steam Deck Beta and Preview channels on 4 June 2026. Per Valve’s release notes, it adds initial firmware for upcoming Intel handhelds and fixes Bluetooth that was not working on some Intel machines. The 3.8.8 Beta followed on 9 June 2026 and fixed an MSI Claw desktop-mode control issue.

Which Intel handhelds does SteamOS 3.8 support?

The SteamOS 3.8 Beta release notes name four MSI Claw models: A1M, 7 AI+ A2VM, 8 AI+ A2VM, and A8 BZ2EM. The 3.8.7 and 3.8.8 Betas add Bluetooth and desktop-mode control fixes specifically for those devices, plus initial firmware for “upcoming Intel handhelds” that have not been named in the notes.

How well did SteamOS run on the MSI Claw 8 AI+ in testing?

YouTuber ETA Prime tested SteamOS beta 3.8.7 on a Lunar Lake-based MSI Claw 8 AI+, and TweakTown reported the OS functioned well on the Intel hardware with one minor bug. Valve addressed the controller menu bug in the 3.8.8 Beta five days later. The MSI Claw 8 EX AI+ with Panther Lake silicon is a separate device that MSI told PC Gamer still has “technical barriers” on SteamOS.

When will SteamOS 3.8 leave beta?

Valve has not published a release date for SteamOS 3.8. The first 3.8 preview landed in March 2026 and the beta has rolled forward through several point releases since. GamingOnLinux’s editor predicted 3.8 will leave beta when Valve ships the Steam Machine this summer, though that is the outlet’s expectation, not Valve’s stated timeline.

Is SteamOS better than Windows for Intel handhelds?

On the Lunar Lake MSI Claw 8 AI+, ETA Prime’s test showed SteamOS beta 3.8.7 running well with one minor bug, per TweakTown. On the upcoming MSI Claw 8 EX AI+ with Panther Lake, MSI told PC Gamer SteamOS still has “technical barriers,” and the company has shipped the device as a Windows 11 handheld. Windows remains the default path for Intel handhelds as of June 2026.