As you probably have heard Samsung stopped production of Note 7. This situation immediately undermined their reputation, so, as we unofficially know, South Korean company quickly began to work on new version of TouchWiz. This inferface will be dedicated to the Samsung Galaxy S8, and for now Samsung is working on versions for several countries: China, France, Germany, Italy, South Korea, Britain, the United States and Poland. When company will reach a stable version of the software, they are going to work on TouchWiz for other countries.

In addition, based on the latest rumors, in next year we can expect official premiere of two variants of the Samsung Galaxy S8: first 5.1-inch, equipped with a screen qHD Super AMOLED, and a second 5.5-inch with a resolution of 4K, and this version will additionally feature dual-camera setup.

source