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.

Update 1: According to our source, the skin-packed copies of Green Lantern will be limited edition and exclusive to Best Buy, however there's a chance the costume will eventually be converted into DLC.

Update 2: Best Buy exclusivity is, according to our source, no longer on the table. While they did not name specifics, "certain other stores" will also be receiving costumed copies.

This article was originally published on Joystiq.