Did a little bit of testing over Easter. As far as I can tell, the Linux part is working, but on the dtb side there seems to be some patching to do. My testings (Images from yesterday):
ROC-RK3399-PC: Booting. Libreelec Logo, Resizing ok. Reboot: Libreelec Logo...and nothing. (See attached File)
NanoPC-T4: everything's fine
Nanopi-M4V2: Bootloop, as I had in 9.2 until rk3399-nanopi-m4v2 was available.
Khadas Edge-V: Booting and starting. Ethernet took long to configure and leads to adress 169.xxx.xxx.xxx => no ethernet. Wifi fine.
RockPro64: After removing emmc everything's fine.
Rockpi 4: Everything's fine.