Hot on the heels of the Jelly Bean update for the Verizon model, the Galaxy SIII (S3) on C Spire Wireless is receiving its own OTA starting today. The update will bring users up to Android 4.1.2 -- build L710WWMB3 -- and include numerous features. On top of the usual Jelly Been goodness like Project Butter and Google Now, there are specific fixes and enhancements being made to the software. Several apps -- including Chrome, Paper Artist and Voice Search -- along with a dozen new widgets have been added with the update. Numerous fixes, including an S Voice update, MusicHub 3.0 update and streaming audio/video fix are all included.
The update is pushing out OTA in phases (as is usually the case), but if you're anxious you can also check manually for the update in your phone's settings. If you've really got some time on your hands, you can download the Kies desktop software and install the update manually.
Source: C Spire; Thanks, Jeff!