I read Dan McNeil was invited back, but he doesn't know if he's going. As far as former gems like Tom Shaer, Tommy Williams, Dan Jiggets, I don't know.
You can't go unless you have tickets. In the height of all arrogance, they had a texting contest the other day to give some away. They put the winner at 67,000. So there you go--so popular they have to take the most texts ever in a four hour period.
By the way, the word is that the last anniversary show sucked big time. The Score folks were on the (closed) top level of the bar drinking but not mingling with the listeners. Also, open bar for the on-air staff--listeners cash bar.