Atlus‘ Catherine now has a rental option in addition to purchasing the full game. NeoGAF users report (via PSN Stores) being able to rent the game for free in one and seven-day rental options, with said rental appearing in the PlayStation Network services list, but are never given an actual download for the game. PlayStation Plus subscribers are reportedly the only users able to see the rental options.
That said, it’s likely this feature was accidently rolled out early, as Sony itself would have made an announcement about it. We’ll contact Sony for comment.