According to Moviehole, "Warner Bros are apparently jazzed with “Cloud Atlas”, and love that it’s as much a spectacle as it is a showcase for the immense ensemble involved, so it makes sense the W’s are under consideration."
Besides bringing the blockbuster "Matrix" trilogy to the big screen, the Wachowkis co-wrote and produced the graphic novel adaptation V For Vendetta, and directed, wrote and produced Speed Racer. Warner Bros. will release their Cloud Atlas in theaters on October 26.
http://www.comingsoon.net/news/movienews.php?id=94060&offset=10
I don't think they really had a great movie outside the first Matrix, but as long as they don't write The Justice League movie and let someone else do that, it might be fine.