I went to EB Games today and this was up for pre-order for May. I didn't get it because it was $60 and I can just get it for probably $30-$40 off the US PSN store, but it's good news it's coming soon, I was about to import the Japanese version. With such a small window I'm glad I didn't.
it's already available on steam for 50 american dollars, considering the exchange rate, a lot cheaper than what it will be if you buy boxed in australia. but the downside is it's like 28 gigs to download off steam.