Firstly I will start with the Green Lantern movie as it is the most near film that will be released. There will be a 4-5 minute clip shown on the big screen exclusive for fans attending (so if you want to watch on youtube check everyday every 10 minutes before it is removed). The clip shown which has been reported several times here at CBM is the scene where the ring choses Hal and he is transported in his car to Abin Sur's crashsite and is told of the Green Lantern Corps. I also believe that they will reveal one or two of the voice actors during the movie (Kilowog, Tomar-Re) most likely during the Green Lantern panel interview.
Now onto the most anticipated sequel in the history of Comic Book Movie's, Batman 3. Christopher Nolan has frustrated fans with little information about the film only that the villain isn't Mr. Freeze and that the script is finished. Well I believe there will be an announcement that will reveal the final movie's title and possibly a cast addition, the main villain most likely.
Along with Batman 3 news, simultaenously there will be Superman reboot news. All of this will likely be made by Geoff Johns during a fans question answer session or an official announcement. I think they will reveal bits of tibits about the story but more likely who will direct the thing.
There is a possibility of news of the Flash movie most likely that it has been greenlighted and Greg Berlanti being confirmed as the movie's Director.
Most of the announcements will come in one big chunk, outlining DC Entertainment's big master plan, a movie timeline and info about the up and coming films and their current status'. Here is my projected timeline that I believe DC are estimating for there films, with there being at least 1 DC film a year mostly stretching to 2 films a year.
17 June 2011 - Green Lantern
20 July 2012 - Batman 3 (Working Title)
25 Decemeber 2012 - The Man of Steel
5 April 2013 - Wonder Woman
12 July 2013 - The Flash
20 March 2014 - Aquaman
15 June 2014 - Green Lantern 2 (Working Title)
17 December 2014 - Justice League
It remains to be seen until a much later date whether there will be sequels to films like The Flash, The Man of Steel, Wonder Woman and Aquaman. But The Man of Steel is being lined up as the premiere franchise at Warner Bros. after Batman 3. I will just remind you that the timeline above is not official but is my predicted timeline for the movies' release. They won't release a movie in May 2013 because of Iron Man 3 coming out that month so will put Wonder Woman before that in that part of the year when movies like Clash of the Titans which Wonder Woman falls into. The Flash is more of a summer blockbuster and will slot into July 2013 which is the prime month for success. Aquaman is the same category as Wonder Woman and I can't see them changing Green Lantern's month release date when it will do well. Justice League could be for summer 2015 very easily but will have to consider the age of the actors in question (Bale) with a 10 year gap between Batman Begins and Justice League which will be Bale's last outing if he agrees to do it. I could see just before Xmas 2014 as a good slot, look at Avatar and that's success.
Let me know what you think in the comments below. :)