Today, Idea Factory International announced that Hyperdimension Neptunia Re;Birth1 will be released on 08/26/2014 in the North American market (both physically and digitally), and it will be digitally released on the 27/08/2014 in the European market.
IFI is also happy to let fans in Australia know that Neptunia Re;Birth1 will be released to the Australian PlayStation Store as well!
Source: GBAtemp Inbox