The Assassin's Creed blog has details on a third patch for Assassin's Creed Unity, saying this will roll out for Windows and consoles this week. The new version is said to include over 300 fixes, including framerate improvements, though they say more improvements in this area are in the works. Here's word:

Thanks to your collaboration and support via our Customer Support channels and this Live Update blog, we have assembled Patch 3 and are preparing to deploy it on console and PC this week. The rollout itself will begin tomorrow (Wednesday November 26) on PS4 and Xbox One and later this week on PC.

Patch 3 includes over three hundred fixes designed to improve your Assassin’s Creed Unity experience. While you might notice some improvements to framerate as a result of Patch 3, we still have a future patch planned to further address framerate concerns.