Lets face it, some updates are more exciting than others. The OTA that Sprint is now rolling out to the Galaxy S4 is not one of them. That's not a bad thing per se, as a small update is better than no update - just don't expect much here. The list of enhancements for this one is just one line long. Software version MK2 "resolves sleep mode issues." That's it. If your phone wasn't sleeping well, it should rest more easily now.