Horizon OS v2.9 puts three Quest windows side by side, in the test channel first

T2Covered by 1 source · first reported by UploadVR / Road to VR / MIXED at 30 Sept, 04:04 UTC

Meta Horizon OS v2.9 can hold three Quest windows next to one another or stack them, through a window manager reached from Quick settings, and it is a Public Test Channel build rather than a general release. Meta's Quest release notes say the v2.9 features "will become available starting the week…