GrapheneOS statement on Mastodon: https://grapheneos.social/@GrapheneOS/114661914197695338
Calyx made an official statement on this development here: https://calyxos.org/news/2025/06/11/android-16-plans/
Concerning stuff. Hopefully a workaround or solution is found at some point, but if not, I'm already thinking of how to manage without them.
I can't see myself going back to a standard Android phone, so I suppose worse case scenario, I'd have to settle with LineageOS, or potentially abandon Android altogether and see if I can manage with discrete separate devices to fulfill the same needs, such as:
- a pocketable mini-Linux PC like a MNT Pocket Reform, which has the ability to use cellular networks. Should be able to text, browse web, and maybe GPS? Alternatively, perhaps the Mecha Comet?
- Small pocket-able dumb camera
- MP3 player
- Dumb-phone kept in a faraday bag when not in use?
EDIT:
Update on the situation from GrapheneOS in this thread (using Redlib, a proxy of Reddit)
The biggest problem for GrapheneOS is not the change to AOSP but rather our lead developer since 2022 being forcibly conscripted to fight in a war in April. That's why we've been asking for help since April.
In April, we were contacted by someone about upcoming changes to AOSP impacting us including the removal of device support in Android 16. We talked about it internally but didn't know if the information was credible. We prepared as much as we could for the Android 16 port but didn't know exactly what would happen with device support. If we had clearer information on it and knew it was accurate, we could have prepared much more in advanced.
Porting to Android 16 is required to continue shipping full Android privacy/security patches regardless of device. Only the latest stable release gets full privacy/security patches, which was the May release of Android 15 QPR2 and is not Android 16. Older releases only get backports.
Pixels also only have their driver and firmware patches for Android 16, although we're working on a release within the next 24 hours with backports of the most important firmware patches. We would normally have an experimental Android 16 release out already, if they hadn't made changes to AOSP.
There are further changes coming to AOSP. It is not only what is talked about there.
In another comment:
We're going to be continuing GrapheneOS but in the long term we'll need to shift to our own devices with an OEM partner.
It's not only Pixels which are going to be impacted. Pixels are still the only devices meeting our hardware requirements (https://grapheneos.org/faq#future-devices). It's clear we need our own hardware in partnership with an OEM that's serious about security and capable of delivering on it. We've had several attempts at OEM partnerships but they were unable to provide what we needed. It will cost millions of dollars to get a device meeting our basic requirements. We can do that, but we hoped for an OEM wanting to work with us instead of us needing to pay for everything through raising funds. We didn't end up finding a good OEM to work with that way so we'll do it the hard way.

Okay, let's say GrapheneOS is dead. That was a nice 10 years, so I've not kept up to this scene.
What's the next best thing left standing? LineageOS?
I think you're missing the point. If this is confirmed as a policy change, it's not GrapheneOS that's dead... It's the Pixel as a mod-friendly device. And of course GrapheneOS runs only on that.
So the first thing you need to ask yourself is what's the next best device. I have a Fairphone, I like it, they are extremely supportive of the community (so far as to help porting PostmarketOS on 10 years old phones). Then you decide which Android ROM is the best. CalyxOS for instance sounds pretty good.
Using a Fairphone does include a few compromises in terms of security compared to a Pixel. How important that is to you is something you'll have to decide.
For me it's pretty fine. If, like almost everyone around here, you are a human rights activist in Iran. Then maybe you should just keep running GrapheneOS on you Pixel with Android 15 for a few more years.
Hopefully within a couple years we sort this mess out, and a new reference device emerges with a hardware security features that are not too much of a step down from the Pixels.
GOS I mainly just like being deGoogled as much as I can while it still being Android. Sand boxing/permissions per app too. Yeah I'm not a war reporter so I can keep using it for some time worst case. Thanks, I'll look bookmark Fairphone/CalyxOS for the potential future.