Android 5.1 Lollipop will bring new camera interface and features to Samsung Galaxy S6 and Galaxy S6 edge. The new firmware is expected to arrive on the duo of flagship smartphones in June. With Android 5.1, the already capable 16MP camera of Samsung Galaxy S6 and Galaxy S6 edge will receive support for capturing images in RAW format. The snapper will also get simplified pro mode and shutter speed control. Another slight tweak in the camera UI will let users control exposure levels by simply dragging their finger up or down. In a way, this mimics the functionality offered by Apple in the iPhone camera app. Source...
Source: http://www.gsmarena.com/galaxy_s6_s6_edge_camera_update_due_with_android_51_in_june-news-12429.php