Tonight!!
(well, tomorrow since I'm not in the US but still)
IGN have posted their review of season 3 and it's another extremely positive one. They gave it a 9.5/10
I've seen quite a few reviews and tweets from those who've seen the season early and literally every one has said how brilliant it is. My expectations are high.
The one thing about the whole season being aired over one weekend is that it will take a hell of a lot of willpower to stop myself from watching them all too quickly.