During San Diego Comic-Con, Capcom announced what has been rumored for a while now - they are working with Namco on two brand new fighting games. The two titles are called Street Fighter X Tekken, which is based on the Street Fighter IV-engine but will include a whole bunch of Tekken-characters, and Tekken X Street Fighter, which will be built around Tekken 6 but include Street Fighter-characters. Got that? I got confused by just writing that, but it's not really that complicated.
The games might be under development, but they won't be out in quite some times, so instead you'll have to settle for writing fanfics about Chun-Li fighting Paul. Or whatever they are doing in your imagination, you dirty person. Have a look at the first pictures from Street Fighter X Tekken below.