Eurogamer grabbed an image of the listing before the takedown, which had a May 16, 2012, launch date.
Since this is the Ratchet and Clank HD Collection, we take it to mean it includes the original game, Going Commando and Up Your Arsenal. It'd be a bonus if Deadlocked -- the Jak X of the series -- were also included.
Ratchet and Clank being MIA from all the HD collections that Sony's been pushing out over the years has been a little odd. Anyway, none of this HD collection talk is official until Mr. Zurkon says so. Mr. Zurkon has the last word on everything.