Just to check (didn't want to start a new thread) - is everyone in the same boat as me where you've been able to download the launcher but not the actual game on the PC?
Yes, the rest of the files should be available to download tomorrow on the 15th for PC.
Phase IV, right?
Is this the Beta phase that allows us to make changes to our character that stick?
The characters in this phase will carry over to Early Access and release. So whatever progress you make this weekend will stay with you, as long as an emergency doesn't happen and Square needs to delete all character data.