#GrapheneOS based on Android 15 will reach the Stable channel later today. It's very stable already and we've fixed a bunch of upstream bugs including several impacting the stock Pixel OS. We've made 7 official releases based on 15 already and the 8th is going to reach Stable.
We normally would have had it in the Stable channel already. We've been quickly fixing all the significant issues as they've been reported, but people kept reporting new ones afterwards and they've been past what we consider significant enough to delay the release until today.
An AOSP keyboard app layout issue was reported today where in landscape mode the right side is slightly cut off but still remains usable. We could push out the current release to Stable, but we've resolved this and we're building another release so we'll very likely wait for it.
We're capable of pushing out a fix for the keyboard app issue via our App Store. We're currently considering which option is best while we build the release. It's too bad this didn't simply get reported yesterday in which case the release would already be in the Stable channel.