District event registration opened today at noon. Public facing APIs and database queries were disabled until now, it seems that they are all up again.
https://my.usfirst.org/myarea/index....=FRC&year=2017
http://173.255.246.196/2017/
http://frclinks.frclinks.com/
I imagine
http://www.thebluealliance.com/ will pick up all these changes eventually as well.
For the moment all regional events and both champs have been removed from FIRST's event list, showing only district events.