Assassin's Creed 2 will be unveiled in mid-April according to a teaser site for the game that went up this week.
The site scrolls through some of Leonardo da Vinci's drawings, annotated with Assassin's Creed-esque additions like Altair's blade, and ends by mentioning US magazine Game Informer and 16th April in mirror writing.
Up to now all we've had to go on is publisher Ubisoft telling investors to expect the game before the end of March 2010, and speculation that it takes place in France in the 18th century.
The first game was set during the Crusades, of course, and saw master assassin Altair working to regain his master's favour by topping people in beautiful renditions of Acre, Jerusalem and Damascus, even though all this was really happening in the genetic memory of some bloke called Desmond chained to a table in the future.
Check out our Assassin's Creed review to refresh your memory.