nitpick-grade: During boot, the setserial display of each port (ttyS0....) etc. should be and was orderly, i.e. each port started on a newline. But w/6.1, most, but not all of the time, (?!) the newlines are lost, and it's one long string.... I've not been able to grok why some boots it is OK and most are not. (Note this is a display-only issue; not affecting operation....)
This smells like the new initscript handling at work. Dunno, please reopen if you wish me to find out more.