Jeff Robinov also spoke out on other DC hero projects. He confirms that script a for a new Justice League film is currently in the works. It's unknown if this a completely new take or a reworking of the previous script for George Miller's Justice League of America that got scrapped. What is known that Christopher Nolan will likely be involved as he is producing both the Superman and Batman reboots. I wouldn't be shocked to see him also producing Justice League and other future DC films. As it sits Ryan Reynolds and Henry Cavill seem like the only actors set for the film.
Of course this sounds in line with previous talk of the DC heroes taking over for the Harry Potter franchise. So I expect we could be seeing two DC films a year one in the summer and one during the Christmas season. Not mentioned is the fate of the Green Arrow film Supermax written by David S. Goyer (Superman: Man of Steel, Nolan's Batman Films, Blade) or the rumored Aquaman project. If they are on the road of a Justice League film they really should put Supermax back in development as Green Arrow would be needed to ground the film slightly as he doesn't have superpowers. One thing that grounds the Avengers is the fact that characters like Hawkeye, Black Widow, Maria Hill and Nick Fury don't have superpowers but are still great heroes.