Whilst talking to Entertainment Weekly, The Force Awakens director J.J. Abrams talked about The First Order's new battle station simply called, Starkiller Base.
On the comparisons between Starkiller Base and the Death Star, Abrams said,
“It is very much — and it’s acknowledged as such in the movie — apparently another Death Star. But what it’s capable of, how it works, and what the threat is, is far greater than what the Death Star could have done. Starkiller Base is another step forward, technologically speaking, in terms of power.”
Starkiller Base from the official poster
Attack over Starkiller Base
We can clearly see the new AT-AT Walker
The First Order assemble
Star Wars: The Force Awakens will be released on December 17th 2015.