Asuka Confirmed in Street Fighter X Tekken

Also found on website they will be including Xianghua, Alisa, Zafina, Dan, C. Viper, and Juri based on the teasers. The others are just wild guesses like Paul, Jin, Dragunov, Mokujin, Miguel, and Law. March is still far away, they can still add more characters.
Check them out: http://www.capcom.co.jp/sfxtk/trailer.html