+C. Anthony Esposito II
If you've seen Tizen, you'll note that Samsung is trying to move that OS and its users away from the Google ecosystem entirely--that's the purpose behind it. Here you've got Maps, Gmail, PlayBooks, and the PlayStore. In all of their Tizen mockups, none of those things exists, and it would be ridiculous to blatantly promote Google's ecosystem in their own ecosystem--even though apps are able to be used in it. Samsung has their own email client, their own marketplace, and their own content stores. They'd put those up front and center before Google's major Android apps.
This has each and every one of the major Google apps in it, and it follows KitKat's design language. Tizen is closer in its design to Meego. This is undoubtedly a mockup for a new Android skin.