I had the same thought. Incorrect or contaminated fluid. Check the fluid level (procedure should be in the manual, if you're unfamiliar with it) and wipe the dipstick on a white cloth. At 8k, the fluid should look fresh, if it's brown or has a burnt smell, there's definitely something wrong there.
There's always a chance of an isolated manufacturing defect in the transmission itself, and perhaps there are excessive metal shavings wreaking havoc in there. That's something your dealer would have to diagnose.
Good luck, and keep us posted. I'm not far behind you mileage-wise!