The PlayStation 4 version of Assassin's Creed 4: Black Flag currently outputs natively at 900p, Ubisoft has revealed, with a future title update set to offer full native 1080p visuals.

In an update on the UbiBlog, Ubisoft communications manager Gary Steinman explained that "players will need to download a title update (available shortly after release) to enjoy the full 1080p native resolution.

"Even without the title update, the game is undeniably stunning on next-gen consoles. Indeed, as Associate Producer Sylvain Trottier suggests, some players might not even be able to tell the difference. That's because the game, as shipped, is being rendered on next-gen at a resolution that's very close to 1080p (900p, if you're curious), and the upscaling process barely adjusts the image."

"If it's running at 720p vs 1080p you're going to notice the difference by far," Trottier explains. "But if it's set at a resolution that's very close, where most of the pixels are already there in internal processing, most people won't see any difference."

Steinman explains that the retail version shipped at 900p in order for the development team to "deliver a visually brilliant game at a steady 30 frames per second... 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."

The update also introduces a "brand-new anti-aliasing technique" that will offer "an even cleaner, clearer and more brilliant moving image".

It isn't yet known when the title update will be available, or what native resolution the game will run at on Xbox One. The anti-aliasing technique will be available for both PS4 and Xbox One.

Assassin's Creed 4: Black Flag launches on PlayStation 4 alongside the UK launch on November 29, and on Xbox One next Friday, November 22.