Famitsu has two pieces of expected news regarding the Persona series, and one not-so-expected one. First, as with Persona 3 Portable, Atlus is bringing Persona 4 to the Vita as Persona 4 Golden, and it will feature a new character and other new features. Also, Atlus confirmed that Persona 5 is is development, but there's no word on what platform it will be for. As for unexpected news, Arc System Works, makers of the Guilty Gear and BlazBlue games, are working on a fighting game featuring Persona 3 and 4 characters. NeoGAF has a thread
with all the details.