The point where new phones stop being made for CMDA is still another good five years away. Hard and fast in the business world doesn't mean squat.
Verizon could still push for LTE phones. My carrier in NZ rolled out UMTS about six months ago and immediately stopped selling CDMA phones. You can still buy CDMA phones from third-party resellers but as you can see the range is getting quite small. As time goes on, more and more users will be on UMTS and the CDMA market will shrink. I can imagine Verizon doing a similar push.