Idea Factory and Compile Heart have revealed in the latest issue of Dengeki PlayStation that Hyperdimension Neptunia Re;Birth 1 Plus will be released exclusively for the PlayStation 4 on May 31 in Japan.
The enhanced release of Hyperdimension Neptunia Re;Birth 1 will be priced at 5,800 yen, with a limited edition also revealed which will cost 7,800 yen for those interested.
You can take a look at the box art for the standard edition of the game below. For more information, take a look at my review for the original release on the PlayStation Vita. There has been no word of a western localization.
Update (02/21/2018): Amazon Japan has the first screenshots of the enhanced release, which you can check out below: