Last month, Samsung began the rollout of Android 5.1.1 Lollipop - the latest non-preview version of the OS - for its Galaxy S6 and Galaxy S6 edge, starting with those devices sold by T-Mobile US. The update has been making its way to other carriers in the weeks since then, including US Cellular.
Today, Android 5.1.1 makes its way to the S6 and S6 edge in India. SamMobile reports that the update brings the Galaxy S6 (model SM-G920i) up to firmware G920IDVU2COF8; the Galaxy S6 edge (SM-G925i) gets bumped up to G925IDVU2COF8.
In addition to the changes that the 5.1.1 update brings, Samsung's new firmware also brings a few revisions of its own, including new camera features, multi-user support, and various configuration options, among other things.
The update will be rolling out over-the-air to both handsets in the coming days; rollouts like this rarely reach all devices at the same time, so if the update is not immediately available for yours, give it a bit more time before descending into panic.