Just yesterday afternoon, Shehui Yoshida tweeted a picture of Ico HD running on a Playstation Vita. Many were curious as to what this could mean, whether it be a sign of remote play advancements, or a port, similar to the Metal Gear Solid HD Collection. A little bit later, he followed up with some great news regarding how the game will be available on the PS Vita.
Sorry to tease you, I was play testing ICO HD Remote Play on PS Vita. We are almost ready with a patch. Beautiful on OLED. More info soon.