If I'm not mistaken, the Galaxy S3 was the last phone on Verizon to support SVDO (simultaneous voice and EVDO or 3G data), the only others are the Thunderbolt and Rezound.
Probably not going to see new phones support SVDO as it's being phased out due to Verizon's expanding LTE network which supports SVLTE (simultaneous voice and LTE). There is also the issue that in order for a phone to support SVDO, it requires extra hardware (multiple transceivers and/or antennas) and a software configuration to manage them so the phone doesn't exceed FCC SAR requirements (don't want to radiate your noggin with too much RF - radio frequencies).
AnandTech has a good write up on the extra hardware/software setup in their Thunderbolt review:
AnandTech | HTC Thunderbolt Review: The First Verizon 4G LTE Smartphone
Additional/related info also on in their write up on why the iPhone 5 doesn't support SVDO or SVLTE:
AnandTech | Why the iPhone 5 Lacks Support for Simultaneous Voice and LTE or EVDO (SVLTE, SVDO)