Yes, there are. WWE is coming out with more games. They have SmackDown vs. Raw! 2009. SD vs. Raw is already out. Legends of WrestleMania is another one and it is also in stores now!
Theres not going to be any more coming out.
Pokemon platinum is coming out soon
Bill Goldberg has retired from professional wrestling and has denied any rumors about him returning to wrestling.
there is WWE Smackdown vs. Raw 2010,
Pokemon Black and White will be coming in spring of 2011.
Probaly, there are rumors floating around
Yes sly 4 will be coming out soon
http://www.njwrestlingtournaments.com/
Yes one comes out every year
No, But if you created such a game, it would bring in millions
I'm very sorry to say that there aren't many wrestling manager games out there to choose from. Especially not free ones. If you want some examples though to check them out then go to google and type in 'Mdickie' or 'EWR Wrestling'.
No, they are all 15.