There already is a forth race for the storyline (Xel Naga anyone?) but they were extinct...

Maybe for the story's sake, they will be brought to life again. Who knows?
I await to be surprised.

It seems that there will be units available in the editor but not the multiplayer/campaign game (such as dragoon, firebat etc). If they can put extra units in the editor, why can't they put a whole new race in? Just a guess.

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Is Starcraft 2 out yet? Maybe if I press refresh...

Because those extra units don't need to be balanced. You're missing the whole point. The reason that starcraft was such a successful game is because it's probably the most balanced game of it's kind. That decreased the amount of bandwagonners and cookie-cutters ruining the game. If starcraft 2 is to be anything as successful as the original starcraft, it needs to meet or exceed the balancing standards.

Totally agree with you.

i wonder

I dont think that they will add a fourth race but maybe they will make a campaign race like the Naga from WC3...

I Actually hope there is a 4th race even though i do agreee that it would take forever to balance but also the other day after looking at this i thought they wouldnt have a 4th race but i saw a screenshot or an artwork that was a creature that looked like a zerg morphed with a zealot

the race must be like a new race that aborbed DNA or somthing.....

IF they do add a 4th or 5th race id should be a little 1 like Naga or Blood elf in Wc3 otherwise the game would be ruined in my opionion

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:WTF:

I totally agree.