A PlayStation 'blog' post - okay, a PR and marketing release - has announced that a dead tree publication has "...revealed the cover for their January 2009 issue today, which features none other than ? you guessed it ? Uncharted 2".
Yes, Naughty Dog and SCEE's forthcoming sequel to Uncharted: Drake's Fortune (reviewed here) is called Uncharted 2: Among Thieves.
Dropping Drake (Sir Francis that is, not Nathan) in favour of Venetian explorer Marco Polo as the historical reference, the game is said to feature a free climbing mechanic and stealth gameplay.
No release date is given. We are totally guestimating an Easter release... because we're looking forward to a new Uncharted because we were rather deflated by Tomb Raider: Underworld (reviewed here).
A trailer for the game will be available on Decemeber 14th. A few seconds of it can be seen below.