The user claims that from their "last meeting with Sony" the HD remakes are getting pushed back almost into 2012. There's been no confirmation just yet.
"Looks like this Holiday actually from my last meeting with Sony," user SHC-Gamer on the Cheap Ass Gamer forums. Last anyone knew the Collection was due for release this spring. Team Ico mused that a Last Guardian demo .
It's all rumour for now until Sony spills the beans.