The front page makes it sound like the development is moving along at a moderately slow pace and it's still a work in progress.

The screenshots are pretty impressive for an open source game though. At least all of the buildings. They don't have many shots of troops in there.

> Currently, 0 A.D. is still in alpha phase, which means an early experimental phase. It is playable, and you can already download and test the game, but some features are still missing. When will 0 A.D. be released? It is very hard to predict. Even after we are done implementing all the features, we will want to conduct extensive beta testing, which can take a while. Information about release dates will be released at the appropriate time.