Following a leaked Android 4.3 update roadmap for U.S. variants of the Galaxy S III, S4, and Note II, and Android 4.3 firmware leaks for the S4 and (international) Note II, Samsung has officially announced the Premium Suite software package for the aforementioned devices in North America. The Premium Suite will update the devices to Android 4.3, and add features such as updated Easy Mode, Multi Window™, advanced camera options, KNOX, and additional features with new functionality.
Apart from the new features, the update will also add support for the Galaxy Gear, which Samsung announced in a separate press release a couple of days ago. The update will begin rolling out today, and will complete over the course of the next few weeks; the Galaxy S4 mini and both Galaxy Megas are also confirmed to be receiving Gear support, though Samsung didn't mention a time frame for those devices.