So there are a lot of news about 2015. There are some rumors, i don't know if they are true but they come from Eurobricks. First there might be a new wave of Simpsons minifigures series, read more about here: (http://www.thebrickfan.com/another-wave-of-lego-the-simpsons-minifigures-coming-in-2015/).
And there are rumors that Top Gear will be new theme in 2015!Rumored set list is there:
http://www.thebrickfan.com/lego-top-gear-sets-coming-in-2015/
Legends of Chima rumored set list:
http://www.thebrickfan.com/lego-legends-of-chima-2015-rumored-set-list/
And Creator:
http://www.thebrickfan.com/lego-creator-2015-rumored-set-list/
And thats it.