Also, the Z Play Droid has a slightly different software installation on it and will be updated separately from the Retail market Z Play. ANNOYINGLY, the non-Verizon Z Play doesn't have the option of showing the battery percentage to the right of the battery icon in the status bar. The only options we have are third party notification shade apps and the System UI tuner option, which is absolutely terrible.
I haven't found other semi-major functional differences yet, but I'll be buying the unlocked Retail Z Play later this evening. :-!