PepeHodler What's going on with Google?
They didn't make certain device repositories public.
PepeHodler Are they successfully shutting out GOS?
No. GrapheneOS already updated to and supports Android 16.
PepeHodler When and what phones will this affect?
The change just makes certain things more difficult. If 10th generation Pixels meet the project's requirements, they'll be supported, but it'll take longer this time. Existing devices will continue to be supported.
Here's a thread about this topic: https://grapheneos.social/@GrapheneOS/114721666000552094