I did an upgrade to 5.10.3-towo.2 this morning with no problems, so it doesn't seem inherently in the kernel (which towo would have spotted before releasing anyway).
titan, have you tried booting with an init=/bin/bash option? If that works, maybe boot into single user mode, the command line mode. If you get that far, it would then seem a GUI issue - screen driver, perhaps?
With a black screen, what happens if you press Ctrl-Alt-F1?