JayJay If 11 will have similar delayed release as 10 it will for me be a deal breaker and might not need to wait for 11.
What do you guys think?
I think there's basically no way to estimate the lag before the device is released. That's because roughly none of the relevant issues are in the hands of the GrapheneOS project, roughly all of the relevant issues are up to Google, and Google has been changing their practices a lot recently.
As with most questions about the timing or extent of GrapheneOS support for an unreleased device, the question may be very natural and many people may very much wish the answer could be known in advance, but none of that makes it possible to know the answer in advance -- unless, of course, Google chooses to announce their intentions in advance.