We loved how the TouchWiz looked on the Samsung Galaxy S6, but it look like Samsung feels that it should be improved because new leaked images showed the Touchwiz looking a lot flatter after the Android 6.0 Marshmallow update.
The image was posted on Weibo showing the Samsung Galaxy S6 model running on the upgraded Android 6.0 Marshmallow design. The poster did say that this is an early build so it might not end up looking like that when Samsung Galaxy Users finally gets the update.
From what we can see, Samsung seems to be going for a flatter design for the icons but other than that, the Touchwiz looks almost the same. There is still no word on when the Android 6.0 Marshmallow will be arriving for he S6, but there are rumors suggesting that we should be seeing it before 2015 ends.
One thing to look forward to with the update is the new Doze feature that will have improve the battery life of the S6.