Got a reply from TRU about quantities.
They have said they've ordered a hopefully sufficient amount and they should be here mid to late June.
(So I'm guessing around August)
The reply went as follows:
Dear Ryan,

Thank you for your e-mail.
We have placed an order for a sufficient amount, so hopefully you don't miss out this time.
We don't have an exact release date, but stock in due to arrive in early to mid June 2013.
You can always call us around that time so that we can give you an idea of which stores will be receiving stock.
If you have any further enquiries please don't hesitate to contact our customer service team.

Kind Regards,

Customer Service