CyanogenMod has been working on version 11, KitKat, for almost a year now, and decided that it was probably stable enough to use day-to-day. Therefore, my phone (Samsung Galaxy Note II) got upgraded to CyanogenMod 11 M9 a few days ago.
So far it’s been pretty stable. The only snag I ran into was having to upgrade to TWRP 2.7 or higher due to KitKat’s SELinux requirements, which versions of TWRP prior to 2.7 did not support. See my previous article for information on how to get CyanogenMod on your Note II.