Assassin's Creed 2 is being made by a team of 450 people, which is three times more than worked on the original game.
That's according to producer Sebastien Puel, who told Now Gamer that 75 per cent of the Assassin's Creed 1 team remains.
"Making [Assassin's Creed] from A to Z took around four years," he said. "It's a very good thing we are keeping most of the core members who envisioned the first Assassin's Creed - they know the project very well."
Furthermore, Puel added, those returning developers have "thousands of ideas" that weren't implemented in the original game but may make their way into the sequel.
Assassin's Creed 2 will be released this autumn on "all current-gen platforms", which presumably means PC, PS3, Xbox 360 and probably DS.
The sequel follows noble-turned-killer Ezio, who stalks around Renaissance Venice and Florence, rubbing shoulders with the likes of Leonardo Da Vinci, providing plenty of opportunities for Templar plots and Dan Brown twists.
All we know is squashed into our Assassin's Creed 2 gamepage. Look to E3 in a couple of weeks for more.