Overwatch is Blizzard new IP game that was showed on the Blizzcon 2014 convention. Overwatch is a first person multiplayer action shooter. A genre that we have not seen before from blizzard. The game is presented is the old fashion blizzard art style and fits perfectly in the blizzard game collection. It is remarkable how long blizzard has kept this game a secret from the public.
See here the first screenshots of the game Overwatch.