Today we have known the existence of another HD collection for PS Vita: ESRB has rated Sly Collection for the handheld.

Sly Collection PS VIta Leak: Sly Collection rated for PS Vita | VGLeaks 2.0

Sly Collection was released for PS3 a year and a half ago. The package included three PlayStation 2 classic hits: Sly Cooper and the Thievius Raccoonus, Sly 2: Band of Thieves and Sly 3: Honor Among Thieves fully remastered in high definition.