no kitkat update for gs3 (international versons that is)
Samsung's galaxy s3 wiill only see KitKat on its versions sold in the US (maybe Canada). apparently there’s not enough RAM in the internationally sold model for the update to work well. The Galaxy S III has 1 GB of RAM internationally. KitKat is well optimized for running on devices with as low as 512 MB of RAM… so its not because of the OS, but TouchWiz gets in the way.
Samsung’s heavy UI overlay has been criticized for, well, being too heavy, occupying too much space, and consuming too many resources (one of the most important ones is RAM). So while ‘vanilla’ KitKat may run soundly on devices with just 512 MB of RAM, and it has no problems doing the same thing on, say, the Moto G (which has 1 GB), the i9300 Galaxy S III will never see this version of the OS. Because TouchWiz.
Heres the list of devices that made the list to receive updates for 4.4 kitkat update.:
: Galaxy Note 3, Galaxy S4, Galaxy S4 Active, Galaxy S4 Mini, Galaxy S4 Zoom, Galaxy Note II, Galaxy Mega 6.3, Galaxy Mega 5.8, Galaxy Grand, Galaxy Express 2, Galaxy Note 10.1, Galaxy Note 10.1 2014 Edition, Galaxy Note 8.0, Galaxy Tab 3 7.0, Galaxy Tab 3 8.0, Galaxy Tab 3 10.1, and Galaxy Grand 2 LTE. Some of these may jump directly to 4.4, and others that are running older software versions may still receive some interim updates as well