Summit Entertainment announced that a sneak peek of the upcoming movie trailer of Twilight Eclipse will be released online this Wednesday:

Update 2: There’s a new Twilight Eclipse Sneak peek online:

Twilight Eclipse Sneak Peek

Update 1: the trailer of Eclipse is now online:

TWILIGHT ECLIPSE TRAILER

Tomorrow morning be on the lookout for the worldwide 10-second sneak peek of the Eclipse Trailer!

Summit Entertainment

So stay tuned, and come back here to watch this preview of Eclipse which will be here as soon as it shows up.
:)