The announcement of Sly Cooper 4 is all but inevitable.

Tucked away inside The Sly Collection , a HD compilation of the first three Sly Cooper titles on PlayStation 2, is a teaser trailer for Sly 4. It's believed the trailer is unlocked once a platinum trophy is obtained in all three games.Off-screen footage of the trailer was uploaded to YouTube today. Developer Sucker Punch previously teased fans by having Sly Cooper 4 listed as a movie playing at a theater in the first Infamous title.