Some of you may already know, but I just found out.
There will be a few new spinoff mangas, aswell as new Oriko Magica stuff (new to me, that is :x).

http://wiki.puella-magi.net/Suzune_Magica This seems interesting. A magical girl assassin?

http://wiki.puella-magi.net/Taruto_Magica Now this, too, seems interesting. Jeanne D'arc?

If any of you find more info of this or nice translations/scanlations or whatnot, let me know. Or Octavia. Or Sukusuku. Or whomever else that may be interested.

Yeah.[en.wikipedia.org]

Leave Madoka alone.

SPOILER DO NOT CLICK The Church of Homura is the new faith. Noi! Embrace the love! DON'T CLICK UNLESS YOU SEEN REBELLION
(yet somehow the fact that I declare this a spoiler, kind of implies enough to spoil things already)

http://www.animenewsnetwork.com/interest/2013-09-02/kana-asumi-voices-new-magical-girl-in-3rd-madoka-magica-film

Mami x Nagisa

http://www.animenewsnetwork.com/news/2013-07-17/3rd-madoka-magica-film-to-screen-in-u.s-this-winter