Farflame spotted the Enderal launch trailer already:
More information.Enderal - Launch Trailer (German, with English subtitles)
Enderal (to be released July 1-3 of 2016 - English version some weeks later) is a total conversion for TES V: Skyrim: a game modification that is set in its own world with its own landscape, lore and story. It offers an immersive open world, all for the player to explore, overhauled skill systems and gameplay mechanics and a dark, psychological storyline with believable characters.