Starcraft 2 Terran Campaign Is In A Playable State Now

1up featured an interview with Dustin Browder, lead designer of Starcraft 2 recently. Dustin proclaimed in the interview that the Terran campaign has been playable for sometime now. Dustin also stated that they haven't gone into any design of the protoss or zerg campaign(which in case you didn't know, will be its own game). Quote :

The other two campaigns are definitely not in a playable state. We've put by far, the most amount of work into the Terrans -- the other two campaigns are still in planning and concepting, which is where they'll stay until we?re done with the core game. All of our design and production efforts have been focused on the Terran campaign for the core game for a while now.

He also went on to say that Starcraft 2 will have 26 to 30 missions:

The primary thing we can do is structure the campaign in a non-linear fashion. Being able to focus on one race for 26 to 30 missions gives us the breathing room to give players meaningful choices as to which parts of the galaxy they want to explore first, and the ability to create side plots. It also gives us the leeway to introduce more characters, more locations, and allow us some room to explore those characters and settings in more depth. Trying to cram all of that into 10 missions at a time didn't seem feasible, and would have negatively impacted our design goals as well as our story presentation.

It is unclear whether we will play all 26/30 missions or be treated to a few core missions and some other side missions that aren't necessary to finish the game. It has been stated that playing as Jim Raynor, you will have to take missions to earn credit that you will use to upgrade your technology.

I would assume that these filler missions would be there for the sole purpose of allowing the player to earn more credits.

Read the full interview here: http://www.1up.com/do/previewPage?cId=3172090&p=1