HoC E3 UPDATE: Ghost Recon open world game

Ghost Recon: Wildlands with four player co-op

Ghost Recon Open-World Game Revealed at E3 2015

...during Ubisoft's E3 2015 briefing, the French publisher officially announced Ghost Recon: Wildlands, the first ever open world game in the series. It's in development at Ubisoft Paris and is described by its developers as having the biggest open world Ubisoft has ever made.

The game, which has been in development for more than three years, will let you play alone, or in co-op with up to three others. It is set in Bolivia--and the team spent two weeks there for research.

Again, it is somewhere on the E3Expo Site but it is easier to find it directly on Gamespot.