One thing that makes me suspect that there's more to 1.6 than what's currently on the PTS is the space missions.
The only talk I've heard regarding new space missions before is when they've talked about Makeb.
Anyone else got contradictory information?
Perhaps they're rolling it out in stages. A lot of our information tends to seem contradictory, but I've played the waiting game this long so I'll just see what happens.