This went out officially a couple weeks ago, but had a couple things to say on it. The Ultimate Cut version of Watchmen that had already been soft-announced a while ago was officially announced for release on November 7th, and the final running time clocks in at 215 minutes, or 3 hours and 35 minutes. This is the version I've been most curious to see since the film's theatrical release, not that I think it will be a more definitive version than the Director's Cut. The new Ultimate Cut Edition incorporates most of the Tales of the Black Freighter animated thing into the Director's Cut and includes the following extras according to the press release:

Audio Commentary with Zack Snyder and Dave Gibbons

The Phenomenon: The Comic that Changed Comics [28:50]
Learn how the subversive, thematically complex, award winning comic that changed literature, inspired analytical debate, and won countless fans, was created.

Real Super Heroes, Real Vigilantes [27:28]
Explores the fascination and psychology behind real-world vigilantes and where that behavior crosses over into actually donning the hood and behaving as superheroes.

Mechanics: Technologies of a Fantastic World [16:46]
The creators of Watchmen had a great understanding of engineering and science, allowing for plausible mechanics in their characters tools and the world itself. This featurette will guide the viewer through the filmmakers process of turning these technologies into cinematic reality.

Watchmen: Video Journals

My Chemical Romance video Desolation Row [3:16]

Under The Hood [36:00]
A retrospective look on the biography by Hollis Mason - the original Nite Owl - and the world of those who stood for hooded justice.

Story Within A Story: The Books of Watchmen [26:00]
Weave through the nuanced layers of detail to see how a comic-within-a comic acts as parallel commentary to the acclaimed work of Literature, Watchmen.

Digital Copy of the Theatrical Version

Watchmen: The Complete Motion Comics