2 bugs so far
For some reason I am unable to add my outlook.com email account. I tried using both Mail (accounts) and Sys Pref (Internet Accounts). In Mail, the process just quits abruptly at the end with no message. In Sys Pref I get an actual error (Preferences Error). FWIW, my Gmail account was added without any issues.
Anyone using outlook.com email had luck adding it in DP4?
Another bug is when I leave myself logged on and then either let the system enter sleep mode or force sleep, when I wake it, it never asks for password - it just goes right into my desktop. Even though in Security preferences (Sys Pref) I have it set up to require password immediately after sleep.