The Simplify artifical cervical disc should be going into testing of q4 of 2015, but I cannot find any information on it. HSS seemed to indicate it was a gen2-3 disc ( I have been researching gen2-3 discs that are as good or better than the M6-c).
It has a cermanic core.
I reached out to Simplify medical directly with no response over a month ago.
http://www.simplifymedical.com/