Subnautica, new game from Unknown Worlds
Unknown Worlds (developers of Natural Selection 2) are developing a new game called Subnautica, it's an open world underwater exploration and construction game:
Apparently they're using Unity so it's going to be interesting to see what the engine is capable of in terms of underwater graphics and physics. The approach they're taking is also really interesting, as you can see from their video they're basically doing what you'd expect to see from a Kickstarter project. They're showing the team, artwork and music and have a website, blog, forum and Twitter/Facebook accounts in place to get people involved right from the start. I image Ecco fans will be following development of this game closely.