gw2025666 Why am I still not receiving the 2026062100 update?
It is still being tested, so it is not being sent automatically to devices yet.
gw2025666 Do I need to join any special test group or make any special settings?
It's not possible to downgrade, and it is possible that an OS release that is not ready for prime time might get stuck or lose data. So most users should just wait until the new release shows as stable in one of the status tables: https://grapheneos.org/releases#stallion
Users who are willing to wipe a device if something goes wrong can join one of the "testing" chat rooms: https://grapheneos.org/contact#community-chat