Yes, LessFilms recorded all the talks. No idea what the turnaround time will be. IIRC, last year it took 6+ months to get online.
MicroConf was AMAZING. If you haven't seen Patrick speak, you really need to. And you still have a chance to this month in Philadelphia: http://baconbiz.com
I think, that it is a marketing thing as well. You just don't want to put out the videos shortly after the conference, because of all the people who paid $700+ to attend.
They might feel betrayed and appreciate having a bit of a head start.
MicroConf was AMAZING. If you haven't seen Patrick speak, you really need to. And you still have a chance to this month in Philadelphia: http://baconbiz.com