yes 13 rounds release 2012
yes, john cena is making another movie "12 rounds" which will release on march 27,2009.
yes john cena will be in movie in titled 12 rounds and the marine 2 (9/19/09) Ted Dibiase Jr is going to be in the Marine 2 John Cena is in another movie called Brother's Keeper and it is slated to come out around SummerSlam
no
don't know about Eragon but there will be another awesome transformer movie.
No
yes
2014
It is unknown when or if another batman movie is going to be made but it is likely
NO
yes there are always new moviesmaybe...?
Yes there is going to be a Jackass 3.The movie will be released in October 2010.
Yes there is going to be a sequel