Back when the PlayStation Home Arcade was first announced, there was talk of the Home-specific arcade games on Vita (Ice Breakers, Wipeout 2D) coming out as arcade machines in Home. Carriage Return would be a fantastic addition to that list.
I wonder if Sony somehow lost the rights to that game when a partnership with a third-party dev ended. There was never any reason given for its disappearance. Great litttle puzzle game.
If you really want this, why not suggest it in March 2013 Suggestions! But better yet, not only as a Home arcade cabinet, but as a game for the Home Arcade for the PS Vita.