I believe that Federer will rise in 2011. Up the rankings. I think the game is notcatching up to him, he is can still beat Players like Berdych and Söderling. Meanwhile Djokovic is struggling, Murray had a weak season and we all know Nadal will tough time this fall. I hate it but Del Potro will also be a non-factor. Plus players like Davydenke are suddenly playing worse than before. Plus they might be a breakdown next year that we don't know yet.
Federer himself. His game has gone down a bit, just enough for the younger generation to sneak some wins. Federer has enough game to stay competitive in Slams. He will focus on the Slams. He will go deep. I am confident he will win one next year.
All this equals Federer rising up to down to 2 or 1 in the rankings at the conslusion of 2011. and then the question is, will he be ready to take Olypic gold in 2012.