They are working on putting that bracket/league system into place through the quakelive site but no clue on how far they are on that. Also they are going to add either built in irc support or work their own custom chat rooms through the quakelive site for players to use.
It's obvious who they are strictly catering to now.
-euro tdm leagues
-clan arena crowd
-new mode? don't know how else you can define it since insta was always rail only.
most probably ladders will be added in the quakecon update
more cvars....a lot.