The fourth major patch of Assassin's Creed Unity, the one that promises the clear up most of the game's remaining issues, has been delayed. It was previously scheduled to arrive today, December 15, but this is no longer the case, Ubisoft explained in a post on its website.

"Rigorous quality control is of paramount importance to us, and your feedback over these past weeks has indicated that it is important to you as well," Ubisoft said.

"As stated last week, we'd expected to release the patch today (and we know that many are anticipating its release), but we are choosing to hold off until we can give you the improvements we've promised," Ubisoft went on. "We are committed to delivering major performance improvements, which requires that we refurbish the Paris map and that will take a few more days to hit the high level of quality our players deserve."

Ubisoft ended its note today by again thanking fans for their continued patience and understanding.

As previously explained, Unity Patch 4 will address a long list of issues, and should improve stability, performance, online matchmaking, and connectivity overall. You can read the full Assassin's Creed Unity Patch 4 update notes through our previous coverage.

Unity was released in November, though it--like other big-name games this year--suffered through some technical troubles out of the gate. Ubisoft has released a number of patches so far, and is even offering up free DLC and full-games to apologize for the bugs.

For more Unity, check out GameSpot's review and what other critics are saying.