http://en.wikipedia.org/wiki/Ivalice_Alliance
Square-Enix is running a new campaign in celebration of the successes of Final Fantasy XII in the world of Ivalice. (Originally the world of which is derived from FFT/FFTA) This campaign is codenamed the Ivalice Alliance and will include 3 new games for future release.
The first of these is a remake of Final Fantasy Tactics, called Final Fantasy Tactics: The War Of The Lions up for release for the PSP. It will include the whole original story, with some new cinematics and a few new features including a higher character party population amount, online/head-to-head combat using the PSP wifi, and a couple new playable characters, one of which is supposedly going to be Balthier from FFXII.
The other games are also going to be on handheld systems. One of them being
Final Fantasy XII - Revenant Wings, a sequel to Final Fantasu XII for the DS which will explore the world of the Sky Pirates.
The other being Final Fantasy Tactics A2 Fūketsu no Grimoire, or Final Fantasy Tactics Advance 2 - Grimoire of the Sealed Hole, a sequel obviously to FFTA also to appear for the DS.