We are aware of Samsung’s plans to roll out Android 4.3 for three of its flagships launched since 2012 – the Galaxy S III, the Galaxy Note II and the Galaxy S4. We now have more clarity on the time frame of these updates thanks to a new leak coming from French mobile carrier SFR. The carrier mentions that the Galaxy S4 will be getting the update first in October, with the Galaxy Note II and the Galaxy S III getting it during the November/December time frame.
This is exactly what we heard from a recent report on the Galaxy S4 update, which confirms its legitimacy. It is possible that unlocked variants of the smartphone might get the update sooner, as this is pertaining to the carrier variants. However, there’s still no way to know if American carrier variants of these Samsung flagships will get the update during the same time. The three Galaxy flagships will also get support for the Galaxy Gear smartwatch along with the Android 4.3 update.
Source: SFR (Translated)