Well, that wasn't much of a delay.
Not long after Ubisoft announced the delay of Assassin's Creed Unity 's "Patch 4," they've revealed that it's now available.
That's really only 48 hours late, so it's nothing to get in a twist about. This massive patch weighs in at 6.7GB because the developers actually had to replace entire portions of the Paris map; specifically, those that faced frame rate issues:
"Part of the team's effort to enhance frame rate for players involves replacing and updating portions of the Paris city map where we are seeing issues. This explains the large size of this title update (6.7 GB). However, since a large portion of the patch replaces existing files the net increase to the game’s overall size will be less than 6.7 GB."
The patch addresses a huge number of issues beyond frame rate: Crashes, navigation, connectivity, matchmaking, etc. If you've experienced problems when playing Unity , you'll probably want to download this update immediately. It will make for smoother and less frustrating experience, that's for sure.