The patch promises to fix the Sequence 11 glitch and many others (the list may contain spoilers for you), including a bug that allows Ezio to walk on air in "extremely rare occasions." We didn't know about that one, but now we're going to miss it.
Fixed: Situation specific bugs
After the player has resolved a glyph (when the unlock code message appears), if the player presses A and B (for 360, X and O on PS3) repeatedly and quickly, the video will appear in full screen, and he will get stuck in "the truth menu".
Some feedback states that Ezio loses the ability to interact with the fast travel stations.
In extremely rare occasions a bug allows Ezio to walk on air.
When first equipping or re-equipping the Auditore cape, users in the Villa become notorious even if the cape description says otherwise.
While wearing Altair's armour the game crashes when performing multiple consecutive double assassinations.
The game occasionally crashes if the player dies in Toscana, the player is stuck in the animus loading screen.
Ezio and NPCs may get stuck beneath map if pushed in water.
Animus Loading Screen
There were reports of the game crashing while the player is in the Animus loading screen
Fixed: Mission specific issues
Sequence 05 Mission 01
The game froze after completing the mission and following certain steps.
Sequence 06 Mission 02
An extremely rare issue could make the game freeze while Ezio is fighting the guards.
Sequence 07 Mission 02
Sometimes the civilians knocked down by Rosa could "float".
Sequence 07 Mission 07
When the user is in an open conflict, under specific situations the game crashed.
Sequence 08 "Venezia"
If a player desynchronises during the flying machine sequence, the player sometimes spawned near Leo's workshop and not on the tower.
Secret Location: "Vizitatione"
The user remains stuck after locking onto the agile guard with the gun.
Sequence 11 Mission 05
The user cannot continue gameplay after quitting and loading the game. They are stuck in the hideout.
Sequence 14 Mission 02
The user falls through the texture if he is hit with rocks by the guards while climbing
5.1 LPCM support