does the current one have CDMA?
Yes, the Pure does work with both CDMA and GSM. If you order it from RW, and if the RW Coverage checker excludes GSM-only models you will receive it configured for CDMA. If you buy it elsewhere and purchase a SIM for it from RW or Amazon you will receive a GSM SIM.
Yes, I know this sounds strange, but presently it is not possible for RW to activate a phone with their CDMA carrier without having that phone in their possession.