With Man of Steel 2 already announced and the talent behind Man of Steel confirming other famous characters exist in its world (I spotted at least two easter eggs, by the way), it's clear Warner Bros. is seeking to create a universe which connects its DC properties. According to The Wrap, WB is "kicking the tires" on possible solo films for Aquaman and Wonder Woman.
Furthermore, the website claims the studio is going to release the second Man of Steel movie before tackling Justice League -- a project they say people at WB unofficially acknowledge is under development. After the cast is introduced in the team-up film, they would then begin to release solo films for these characters who are relatively lesser-known to the general audience. Yeah, people know of Aquaman, Wonder Woman and the Flash, but beyond their aliases, costumes and basic powers, I imagine most non-comic book fans have minimal knowledge of these characters. A team-up would serve as a great introduction and hopefully boost interest in seeing more from the various Justice Leaguers. Only time will tell how this will all play out, but after seeing Man of Steel, I'm psyched to see what Warner Bros. will throw our way.
Source: The Wrap