False, FXP stopped stopped at CM10. CM10.1 and up is being developed for 2011 Xperia by LXP team, consisting of different members.
CM10 is the most recent version that works with the stable 2.x kernel instead of buggy 3.x kernel. So: less wifi bugs, great battery life, and more stability. Also, CM10.1+ uses significantly more RAM for stuff like lockscreenwidgets.