New Moon Movie has received a press release from E1 Entertainment in the UK which they say states that ALL the UK versions of the New Moon DVD will contain a preview of Eclipse, not just ones at certain stores, etc, like in the US.
Here is what else the press release says will be on the New Moon 2-disk edition DVD and Blu-ray:

In addition to this, the two disc editions of the DVD and Blu-ray will include four hours of bonus footage, featuring:
* Fan Event Q&A with Robert Pattinson, Kristen Stewart, Taylor Lautner and Chris Weitz – EXCLUSIVE TO THE UK
* a 6-part making of documentary
* Life After Twilight
* Chris Weitz takes the helm
* The Subtle Details
* Time to Shine
* Tricks of the Trade
* Ready for the World
* Music videos
* Death Cab for Cutie – “Meet me at the Equinox”
* Anya Marina – “Satellite Heart”
* Muse – “You Belong to Me” (Rehearsal Footage)
* MuteMath – “Spotlight”

* Interview with the Volturi
* Fandimonium – a look at the die-hard fans
* Team Jacob and Team Edward
* Becoming Jacob
* Introducing the Wolfpack
* Deleted scenes
* Extended scenes
* Shooting in Italy
* Edward Fast Forward
* Jacob Fast Forward
* Frame by Frame: Storyboards to Screen
* The Beat Goes On: The music of New Moon

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1. What’s on the Swedish Version of New Moon 3-Disc Set DVD
2. New Moon Single ‘Meet Me On The Equinox’ Sneak Peak
3. Twilight Saga New Moon DVD Buying Guide – So Far
4. New Moon Trailer Sneak Peak *Spoiler*
5. New Moon Sneak Peak Tonight On ET