I haven't heard of an AA showcase, or even a cheergyms showcase for worlds. However, the closest to this that I have heard about is what Kyle sent out on the Motions section of the boards, he is on Motions Coed and AA:
"If you do not know...Motions Coed will have their last practice as just a team this thursday from 6 pm to 9 pm for worlds. If you are interested in trying out for motions this coming season, we want you to come and check out the practice,work out before and/or after, and just watch our last practice. THIS IS NOT A SHOWCASE! parents and spectators are not going to be allowed to be in the gym to watch, you can be in the waiting room if you like,so if you are going to come please come. Workout, hang out, talk, what ever you like. But we want people to see what all the fun, but hard work we have. If you have any questions call nelson or e-mail him. So come and work out...its will be like an open practice...but Coed will still practice from 6-9...so ya...see you guys there hoepfully!