StarCraft II trilogy release explained

Kotaku's posted a chat with StarCraft II producer Chris Sigaty, outlining the thinking behind releasing the game in three parts and adding some detail as to what to expect in each. From the piece:

Each new single player campaign will come with upgrades and changes to the multiplayer. The main difference here is that instead of giving you a tacked-on extension of the single-player experience as you often find in an RTS expansion, each title comes with a fully realized campaign.

Chris explained that each of the three installments would play a bit differently as well, with different meta-game types in each. The initial campaign would feature Terran Jim Raynor, with a meta game that involves upgrading technologies. The second focuses on the Zerg, with a meta-element involving diplomacy. I mentioned Star Control, and Chris said that that sort of gameplay element had been discussed.

More through the link.