Final Fantasy XIII-2 was a surprise. But with what we now know, Final Fantasy XIII-3 won't be too much of a shock.
Given the cliffhanger ending in FFXIII-2 and the fact that no amount of DLC will answer all the hanging questions, along with hints from Square Enix themselves, yet another sequel is quite possible.
And now it seems we might learn all about it on September 1. Franchise producer Yoshinori Kitase informed Famitsu (as cited by Gaming Everything ) that development on the new Final Fantasy XIII Lightning Saga project has already begun.
On top of which, they'll supposedly unveil the official name at the upcoming Final Fantasy 25th Anniversary event in Japan, which takes place on the first of September. Now, that "New Developments" presentation might only involve more Lightning-based DLC for FFXIII-2, but it seems unlikely. Square Enix is also on record saying they need to produce games at a faster clip, which is why we think they're embracing the "annualization" philosophy. …as much as we may hate it.
So yeah, prepare yourself…FFXIII-3 may be inevitable.