TouchWiz on the Samsung Galaxy S7 and S7 edge: here's a quick look

Always on display feature on the Galaxy S7
So far, we've only seen a Marshmallow-based TouchWiz on leaks from various beta builds. Some days ago, the new UI started hitting Galaxy S6 / S6 edge / Note 5 phones in locations around the world, but it seems the roll-out is taking its sweet time before it reaches most eligible smartphones, ours included.
The other notable interface change is the expansion of the edge UX on the Galaxy S7 edge (will also arrive to Galaxy S6 edge via the update). Basically – the Edge Panels are back!... well – in a sense. The Apps edge has been expanded with an additional column for shortcuts; there is a whole new “Tasks edge”, which allows you to program in macro commands – for example “send text to contact x”, or “open camera in selfie mode” et cetera; pulling in from the edge towards the center of the screen will now give us 550 pixel-wide area, which can be filled with panels such as tools (compass, flashlight, ruler), news aggregators, and other upcoming panels. The latter ones are made available to 3rd party developers, so welcome back Edge Panels, we missed thee!
That's pretty much what's new and noteworthy in the new UI. Owners of Galaxy smartphones from 2015 may not be very excited for the upcoming update, but users of the 2014 devices — Galaxy S5, Note 4, and Note Edge — will certainly notice a bigger change once the Marshmallow update hits their handsets!
Things that are NOT allowed: