So far found in two stores computers, so could show up elsewhere as well.
(product code - A6519)

I took my box around different stores today and had the barcode scanned, for all but TRU (which Sinnertwin provided info for)...

ToysRUs - $130 April-May
Target - $99 (on order - but no release date in the system)

Kmart - not in system at this time
BigW - not in system at this time (they said that they only put new items in 2-3 weeks before release)
Toyworld - they can't find out, so only aware of new items as they show up.

Myer - not in their system, and they have items in there until May, so isn't likely to be there.

If it shows up at other stores, I'll update this.