As predicted once the site appeared, Aniplex USA has announced a release for Madoka Magica at their Anime Expo panel. There is currently no information about how or when it will be released. All they can confirm is that they will be releasing it at some point.
Aniplex also announced a DVD release for Blue Exorcist. They will start releasing it later this year, finishing at some time in 2012. The series will be released on four DVD sets. During Q&A Aniplex mentioned that the Blue Exorcist DVDs will be subtitle only.