Update: Sprint's posted the official changelog, here it is:
Read MoreHTC EVO 4G LTE Software Update - 3.15.651.16
Enhancements/Fixes:
- WiFi Authentication Improvement
- Personalized ringtones
- Calendar event description hyperlinks and calendar reminder improvements
- Addition of Sprint Connections Optimizer
- Upgrade to Android 4.1.1 (Jelly Bean) with HTC Sense 4+
- Improved Browser performance
- Face Unlock Improvement
- Application Improvements to YouTube, Google+, Gmail, Maps, and more
- Improved Camera including Auto Portrait and Sightseeing Mode capabilities
- Improved Gallery with ability to display photos and video albums according to when or where taken
- Tap and Go function to connect the phone to select Beats Audio speakers
- HTC Get Started support to allow device set up from a computerImportant Notes:
- Software version is: 3.15.651.16
- Updates may be released in stages.