Well, that's one way to boost Blu-Ray sales.

A devastatingly handsome tipster has sent us pictures of the unreleased Green Lantern Extended Cut Blu-Ray combo pack due out on October 14, and wouldn't you know it, right there on the cover is a sticker proclaiming yet another Batman: Arkham City costume.

For those unfamiliar with the Green Lantern mythos, the Sinestro Corps are a team of baddies lead by the ex-Green Lantern Corps member Sinestro (natch). The Sinestro Corps did, at one point, attempt to recruit Batman into their ranks, so we suppose this Sinestro Corps skin isn't entirely non-cannon.

No word from our incredibly popular and good-looking tipster on whether or not the promotion is exclusive to a specific retailer, however it is exclusive to a specific console: Seeing as this is a Blu-Ray and all, the included code is a PSN code, and therefore only functional on PS3 copies of the game.