The KGB Oracle
http://pc.ign.com/articles/918/918895p1.html

Pretty much the game is going to be split up into 3 installments. One for Terran, one for Protoss, one for Zerg, each releasing a year apart. They were very clear to explain that they're stand-alone games, not expansions. In other words, each will be full price. They're still working on a what to do with cross-compatibility for online play. Extremely lame and greedy if you ask me. Blizzard is turning into the next EA.
An update:
http://www.gamertell.com/gaming/comment/blizzcon-2008-starcraft-2-trilogy-could-span-three-years/

Apparently it turns out they WILL be seen as expansions. I guess that eases the sting a bit.
© The KGB Oracle