As per a statement posted on XDA, the OnePlus Nord OOS11 beta should be coming sometime this week, though the builds for the 7 series are still delayed as OnePlus is finally confronting the dreaded decryption issue that has plagued the series since its inception. This means, that, likely after Android 11 is released for our devices, that we should be able to have a fully functional TWRP along with more custom ROM development on the way. This is very good news for the tinkering community. Hope more is to come in the near future.