The franchise spinoff will be a free-to-play downloadable shooter for PC, and will feature series hallmarks including a third-person perspective and tactical gameplay.
The online title will feature multiple Ghost classes to choose from, customisable weapons, high-tech weaponry and the promise of regular events and content updates.
"Ghost Recon Online takes the best attributes of the Ghost Recon game franchise and brings them online, making the experience of being a Ghost accessible to millions of new players and fans," said senior producer Hugues Ricour.
"This game was designed from the start to be a free-to-play experience. Our development teams are dedicated to making Ghost Recon Online a truly unique, top-quality online title."
Ubisoft CEO Yves Guillemot added: "The online market is an exciting new frontier for video games and for gamers.
"With Ghost Recon Online, and other major upcoming projects, Ubisoft is creating online experiences that allow our fans to stay connected to their favourite brands and to continually receive new content and gameplay."
Earlier this month, it was announced that Ghost Recon: Future Soldier had been delayed until 2012.
Ghost Recon Online will be playable in a closed beta this summer.
View a screenshot and announcement trailer for Ghost Recon Online below: