Also enables "a brand-new anti-aliasing technique."
Ubisoft has released an update for the PS4 version of 'Assassin's Creed IV: Black Flag,' which ups the game's native resolution from 900p to 1080p, and also adds in a flavor of anti-aliasing. For those expecting a better visual fidelity out of the PS4 version of the six platform title, the update makes a remarkable difference.
As for why the game did not ship at 1080p, Ubisoft has offered an explanation on their blog, "But why ship at 900p in the first place? To meet an essential goal: deliver a visually brilliant game at a steady 30 frames per second (the industry gold standard for open-world games). Finishing the game at 900p gave the development team the extra room in terms of the GPU and CPU usage to ensure the framerate never dips below 30 frames per second. The team then used the time between the ship date and the release to focus on a title update that could deliver native 1080p resolution on the PS4."
Source: PlayStation Blog
Author: Brian Hoss