raccoondad Also, will this update get to stable before 2025061000 does?
My personal expection: Unless alpha-testing of 2025061300 show significant problems, which would prevent it to reach beta phase at all, I'd personally expect 2025061300 to "catch up" with 20250610 for stable. I assume that 2025061000 release will be fully superseded once 2025061300 or higher releases reach beta. Please correct me, if I am wrong and someone has more knowledge of the release cycle.
Also note: Pixel 9A still has special releases. Reason: IIRC there never was a Android 15 Q2 release for the 9A upstream, and Google now let's it jump directly to Android 16 (pixel stock version).
Anyway, this might be a good occasion to link to the overview of which device and release channel (alpha/beta/stable) currently are supposed to get which release: https://grapheneos.org/releases#devices
I know the earlier availability for the testing channels repeatedly caused confusion for stable-channel users in the past.
Testing can however by a nice, low-threshold community contribution (besides https://grapheneos.org/donate ). Ofc, nobody is obliged to, but if you can tolerate to encounter more errors than usual (*), using your device on testing channel and reporting potential issues can help debugging and making everything more robust.
"Bonus": Testing users see new features and fixes earlier.
(*): Over my personal usage history, I've encountered mostly low to very-low impact errors - and few in general.