Red vs. Blue Revelations
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).
Season 6
Mark Bellman has: Performed in "Red vs Blue: Recollection Trilogy" in 2008. Played Delta in "Red vs. Blue: Reconstruction" in 2008. Played Delta in "Red vs. Blue: Revelation" in 2010. Played Delta in "Red vs. Blue Season 9" in 2011. Played Delta in "Red vs. Blue: Season 10" in 2012.
Red vs. Blue Season 9 - 2011 was released on: USA: 15 November 2011 (internet)
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.
Recreation
It already has.
Reconstruction
Season 3.