It was anounced about 2-3 months back, with all the casting, dates, etc. Its opening in Melbourne in April. The producers [of the show] are aiming for a year-long run before touring. Tickets for Melbourne have been on sale for a month or so.
Regarding the cast, I was so bummed when I heard Bert Newton would be playing Franz. He'd have been perfect for Edna Turnblad when Hairspray opens here, IMO. But I guess that won't be happening! *sigh*