The whole shebang is due this Thursday. No word yet on pricing, but you can get a glimpse of the Ico and Yorda costumes above. Costumes based off Colossus, likely of protagonists Wander and Mono, are coming, though they have not yet been pictured.

As for the stickers and sound effects, you can get a feel for possibilities they'll provide level designers with via the short teaser that follows after the break: