According to the Wrestling Observer Newsletter, The Rock will not be wrestling at Survivor Series 2011. His scheduled appearance will be to deliver a promo, and somehow get physically involved with John Cena. This will mark the begging of the hype for WrestleMania 28 being in full effect. The Rock will likely also appear at the Royal Rumble and Elimination Chamber pay-per-views.
According to one source, WWE has been bouncing around the idea of The Rock and Cena having two rematches after WrestleMania, making it a best of three series. The final match would take place at SummerSlam 2012. Take this with a grain of salt for now, as it is just an idea being bounced around within WWE and has not been officially agreed upon by any parties.