IGN writes: "Like the Zerg unit list, this is not necessarily the final set of structures players should expect to see in the game. In fact, as Blizzard tells it, this is very likely to change, so we've left off the build requirements for each building. We have, however, listed each structure's name, function, and upgrades it makes available.
Overall there's nothing particularly thrilling about the building list, with the possible exception of the Nydus Warrens and how they interact with the Nydus Worms. Other than that, the information below should be very recognizable to any StarCraft veteran. Note that we're only counting buildings created by Drones."