Jurrassic World is the new movie. Look it up.
They get the park up and running like a Disney Land, it takes place 20 years after the original (modern day today), a new type of dinosaur isn't with the program though, and all hell breaks loose. Those are the only details I remember at this point. other than Velociraptors are supposedly tames and so are the T-Rex's.
and more about Bats vs Supes
http://batman-news.com/2014/01/17/rumor-ben-affleck-injures-leg-batman-vs-superman-production-delayed/Rumor: Supposedly someone broke the Batfleck and now production was halted for at least 6 weeks until he recovers, which pushes the movie into 2016 instead of late 2015.
but if that's not it, remember that the script was getting the "once over" by the Argo writer, and then ontop of that there was the rumor that they were going to do Justice League back2back, so it might be a script overhaul that is causing the delay.
and pushing into May 2016 puts it in direct competition with the following movies:
It will now bow on Mothers’ Day weekend and is playing chicken with Fox’s X-Men: Apocalypse which comes only a week after. Talk about pushing a monster on your tail end. As it stands now, it will be Superman/Batman, X-Men the following weekend and followed quickly by The Amazing Spiderman 3 from Sony.
That's a helluva sandwich. But atleast they aren't going up against the Juggernaut Avengers 2.