The first episode of red vs. blue season 9 was released on the 14th of June and episodes were released weekly until the 14th of November.
The 9th season is over and RoosterTeeth is most likely going to make a 10th, but they haven't released a date.
Red vs. Blue Season 9 - 2011 was released on: USA: 15 November 2011 (internet)
Red vs. Blue Revelations
Season 6
Burnie Burns, the director of red vs blue has said before that he will continue to make red vs. blue even if there are only a few fans left. So yes, there will be a red vs. blue season 11
The best Red vs. Blue season is season 5. It is the most funny of'em all (besides reconstruction, or whatever it's called).
There is Relocated,Recreation and then Season 9
No, season 10 will not be the last season to Red vs. Blue. Season 11 will most likely becoming out this year (2013), and Halo 4 will probably be used to make the episodes.
Yes
Season 3.
Recreation
It already has.