Finally, OnePlus has posted the OxygenOS 13 Open Beta timeline, which is of course based on Android 13. The following devices have already received it — either as stable or beta — and can be updated via our app or from their forums:
The following devices still need to receive an Open Beta of OxygenOS 13 in the fourth quarter of 2022:
OnePlus 10T(got it just a few hours after publishing this article) OnePlus Nord 2T(beta started on 1st December 2022, received stable on 13th January 2023) OnePlus Nord CE 2 Lite(beta started on 18th November 2022, received stable on 29th December 2022)
These devices are scheduled for the first half of 2023:
OnePlus Nord CE 2(beta started on 11th January 2023) OnePlus Nord 2(beta started on 6th March 2023) OnePlus Nord CE(beta started on 1st February 2023, received stable on 9th March 2023)
Here's the timeline in image format (credits OnePlus):
OnePlus has also posted an FAQ in the same post, which we have reproduced below. Note that "we" in the answers implies OnePlus of course.
Source: OnePlus Community