The changelog of this developer preview doesn't reveal much about what's new and vaguely says that it comes with "system functions improvement". However, it does list the known issues which you can check out in the screenshot below:
OnePlus hasn't made any official announcement about the fourth developer preview at the time of writing, but users on the company's official forums have reported its arrival by sharing the download links.
You can head over here to download the preview for the 7/7 Pro. Download links for the 6 and 6T are currently unavailable.
I am trying to say they are not genuine they also copied what they can and could.
i personally tried it it has major connectivity issues with wifi cell conection and speed issues with even full connection strength it feels slower than pie but its a beta so i cant complain. it also doesnt let you decrypt with custom recoveries. im ...