http://kotaku.com/5690372/prince-of-persia-hd-collection-coming-to-north-america-in-pieces
The link above contains a statement from Ubisoft stating that the Prince of Persia HD Collection (Sands of Time, Warrior Within and Two Thrones) will be coming stateside, but it won't be on Bluray. Instead, it will be released on PSN, as three separate games.