Titanfall was a good first step for Respawn Entertainment. The group of ex-Infinity Ward folks developed a nice foundation for a brand new IP.
Today, Vince Zampella told IGN that they are indeed working on Titanfall 2 and as expected, it will appear on the PlayStation 4 along with the Xbox One and PC.
While no details were given, you can expect a DLC model like Evolve where free maps are given as a way to keep the community playing. Vince seems to be a fan of that.