The Gear S2 launched with compatibility for non-Samsung Android devices, whereas their previous wearables required a Samsung phone. Later this year, the S2 will receive an update that adds support for iOS devices. The level of integration and feature set is unknown, but will likely come via a companion app on the App Store.
The smartwatch will now also come in 18K Rose Gold Plated and Platinum variants, in addition to the current stainless steel model with leather strap. The regular Gear S2 just comes with a plastic body and rubber wrist strap. The two new models will be available starting in February, though pricing has yet to be announced.
More Google-y CES coverage is available over on 9to5Google.