Today's Around Disney blog in the OC Register is reporting that the coffee being served at The Market House has already been changes. But not to Starbucks. They are using a vendor called Joffrey's.
They mention Miceage of course, saying that Starbucks was just a rumor. But my gut feeling is that we haven't seen the end of this yet.
Here is the link. I hope it works since I am posting this from my iPhone.
How to get free coffee at Disneyland - Around Disney - OCRegister.com