The 150.3MB update for Verizon’s version of the Samsung Galaxy S3 that was approved yesterday is already rolling out. The update jumps the phone up to build VRBMB1 and Android 4.1.2. It should improve Bluetooth, predictive text in the keyboard, email syncing, and allow you to take pictures while on a call.
The full changelog can be found here.
To pull the update, head into Settings>About phone>Software update.