The latest one is Public Beta 9.
public beta 8 (developer beta 9)...
Yes, and it's the same build anyway. AFAIK.
yes, the developers just get it a day (or so) before the 'public'...
The last 2 PB's came out on the say day just a couple of hours later. At this point I don't see any reason to have both. They should just release one beta and let the developers file their reports separately I suppose.
They'd have to be if they are going to release it on their usual schedule the last few years, which is the MacOS and iOS updates come shortly after the September event.I will -guess- that they're getting close to the "golden master"...