The program is not yet published for this year but you will find a large variety of different live acts like every year. Just have a look at the program of last year.
It hadn't been planned like that in former times. Originally the festival was supposed to be a one off event for the final of the bicycle world championsship in 1991.
The festival was a great success and has been repeated for 22 times until now. Still it is very successful and appreciated by lots of visitors.
The castle square in the center of Stuttgart is packed with white tents, last year there were 29 different locations where you could try specialities and have a glass of beer or wine. 36 bands were playing live on 5 stages during these 4 days.