Xbox Full Screen Experience Mode coming to all Windows handhelds today

Microsoft is rolling out the Xbox Full Screen Experience to all Windows gaming handhelds on November 21, including the Lenovo Legion Go 2, which was previously not expected to get the feature until 2026. The new schedule was confirmed during the latest Xbox Partner Preview broadcast.
The full screen mode first shipped on the ASUS ROG Xbox Ally and Ally X, then appeared for MSI Claw owners who were willing to join the Windows Insider program. Microsoft now says the feature will be “generally available” across all gaming handhelds currently on the market, which covers Legion Go 2 variants such as the AMD Z2 Extreme model. It is still unclear whether this support will be open to all handheld vendors or limited to larger brands such as ASUS, MSI, and Lenovo. Devices from AYANEO, GPD and similar vendors may depend on separate agreements or later firmware and OS updates.
Additionally, we also announced that full screen experience—originally available on the ASUS ROG Xbox Ally and Ally X—is generally available tomorrow (November 21) across all gaming handhelds currently in market. Plus, we’re expanding FSE to more Windows 11 PC form factors through the Xbox and Windows Insider programs soon.

Source: Xbox
Xbox Full Screen Experience replaces the standard Windows desktop with a controller friendly Xbox interface. Once enabled, devices can boot directly into the Xbox app, where players can launch titles from Microsoft Store, Steam, Battle.net and other launchers. Handheld owners can toggle the mode under Settings, Gaming, Full screen experience and choose Xbox as the home app, or switch back to the classic desktop if they prefer.
The mode skips much of the normal Windows shell and several background tasks, freeing around 2 GB of memory for games according to Microsoft. Early testing on the ROG Xbox Ally shows that this can help performance, but also highlights issues such as broken controller focus in some third party apps and Windows UI elements appearing during gameplay. Legion Go 2 and other handhelds will receive the same codebase, so users should expect both gains and some quirks until updates arrive.
Source: Xbox