The New York Post has an article with a few more details about the tour:
According to reps who handle the road show, everyone involved was taken by surprise the first time around by demand. Tickets last year went on sale in 30 cities and sold out, everywhere, within three hours. Producers quickly responded by adding five more cities to the tour and ended up selling 125,000 tickets. This time, tickets will go on sale August 11th (the Fox series wraps on August 16th) and the venues are going to be much larger: arenas instead of small theaters.
The top 10 dancers have already earned their places on the tour. But fan favorites who already got the boot may show up as well. "We always have two or three alternates go along," says one of "Dance"'s three judges, Mary Murphy. Murphy singled out Hokuto "Hok" Konishi, a dazzling breakdancer, as a likely alternate. "He'll be out there by popular demand," says Murphy. "I don't think the fans are going to be disappointed in that area."
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LINK to tour dates