Google is rolling out a new update to the Pixel 3 and 3 XL, bringing support for VoLTE roaming as many U.S. carriers plan to shut down their 3G networks soon, according to . The update does NOT, however, bring updated security patches, as pointed out by .
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There are two builds rolling out:
SP1A.210812.016.B2 - android-12.0.0_r33 - Telstra, Optus, Vodafone AU
SP1A.210812.016.C2 - android-12.0.0_r34 - Unlocked
Both builds still have the 2021-10-05 patch level.
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I hope Graphene is not releasing carrier branded OS from now on. I had lots of misfortunes with branded phones in the past. They are not like original version in terms of software.
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That's not happening. I think you're misunderstanding something about this. These are not GrapheneOS releases but rather stock OS ones and none of them is carrier branded. They just sometimes don't ship certain hot fixes to users on non-impacted carriers in case it breaks others.
There are no carrier branded releases of the stock Pixel OS. It's the same firmware and OS for everyone other than the hot fixes. Carrier devices are implemented by having a carrier id integer flashed onto the device or simply adding the serial / IMEI to a database for lookups.
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The reason the stock Pixel OS requires internet access to enable OEM unlocking on some devices models is so they can turn a regular Pixel into a carrier Pixel by adding the serial/IMEI to a list of carrier devices.
GrapheneOS of course doesn't implement either of those things.