Todays seventh wave seems to have got to the 4th of Dec. There's another one coming according to the Twitter feed (no time given)
Looking at the planned maintenance for tomorrow the servers will be up before the time they have started invites on the 13th, 14th,15th so no added delay if you don't get in today just wall climbing with all the other people who can't play because the servers are down .
All above from reading forums and twitter (well its not as if I'm in the game yet ) hope that helps some