Downloading it as I am writing this.
Its on japan apps store. I plan to try both the ps3 version and the iOS version before unlocking the full version. Although, theres that maintenance thing on PSN so who knows when will it came out.
Another thing, until 16/7 japan PSN is giving a 15 days free PLUS. They got time traveller, zennin shibodesu (although its going to be out on US psn too), and some other great japanese exclusive games.