The folks at PhoneArena reported on what are supposedly leaked screenshots of Android 6.0 Marshmallow on the Samsung Galaxy S6. What's especially surprising is that Samsung has actually "flattened" TouchWiz... meaning they followed the Marshmallow handbook and used the flat, material UI design found in Android 6.
We included one of the leaked images above, but you can check out a few more at the source link below.
Source: TouchWiz goes flat? Alleged Galaxy S6 Android Marshmallow preview screenshots leak