About two months ago, Square Enix registered the trademark 'Blood of Bahamut' and speculation was rife about what exactly this could be. Some speculated that it could be a Bahamut Lagoon remake which could appear on the DS or PSP, while others speculated that it could be the new expansion for Final Fantasy XI. It could also be a completely new title on a next-gen console.
We don't actually have a clue what it's about, but the new website that Square Enix have launched looks very Shadow of the Colossus, and it looks like there will be an announcement made in just under 5 days.
When that countdown hits zero, you can guarantee that we will be there to cover it to the best of our abilities. So check back in 5 days.
Source