There's plenty of on-going discussion about this project here starting from November:
What's next for Busch Gardens Tampa?? | Page 57 | Inside Universal Forums
What's next for Busch Gardens Tampa?? | Page 58 | Inside Universal Forums
But to summarize:
It's some kind of outdoor flat ride.
Total project cost is $4 million.
Rider's will apparently be divided into two groups before boarding.
Best guess is a Screamin' Swing like Finnegan's Flyer, but that's just a guess.
Also, the news outlets who are reporting the queue building is called a "story building" are misreading the plans and interpreting it as meaning something else. The building has one story/floor/level and is labeled as a "1 story building". I guess they missed the number one or just didn't know what they were looking at and ran with the fact it said "story".