Several major UK retailers have listed what appears to be a special edition of The 3rd Birthday titled the "Twisted Edition."
Square Enix previously told press that there would be a special edition for The 3rd Birthday in Europe in a Press Release about their upcoming PSP releases back in December - and it appears the retailers have revealed the name ahead of the appointed time.
It's worth noting that one of the websites listing the Twisted Edition, Play.com, lists March 25th as a potential date for The 3rd Birthday. Unlike most placeholder dates retailers use this is rather specific and also falls on a Friday - new release day for games in Europe.
In The 3rd Birthday the Twisted are the malicious monsters that you have to battle throughout the story. The game is a spiritual successor to the Parasite Eve series, and is Parasite Eve 3 in all but name.
Square Enix has sent RPG Site a statement saying that they'll be making an announcement with details on this "soon."