I'll believe it when i see it.. 2015 seems too soon for such a huge project.
Star Wars isn't some kind of indie movie you can produce in 6 months.. they are huge and i don't know if they can be made in 2-3 years.
Get ready to be surprised.
I do agree that 2015 seems just a little
too soon, and it makes me think they've jumped ahead and announced the project before they'd even started putting any thought into what it will be about. 2016 might be better, but 2017 would be cool because of the fortieth anniversary of the original movie.