After plenty of rumorings, it doesn't look like Amazon will be able to keep mum on the subject for long, since they're expected to launch "Unbox" today. The word on prices isn't exactly wonderful: rentals should go for about 4 bucks, while permanent downloads are hovering at $15. TV shows are matching the $2 iTunes pricepoint, and should be available the day after they air. As for studios, Amazon is purported to have Warner Bros., Fox, Paramount, MGM, Lionsgate, Sony and Universal all signed up, but Disney is said to be holding out for iTunes at this point. Picture quality is supposed to be DVD-ish, and videos will be playable in Amazon's Windows-only Unbox player (pictured), or on your TV or portable device. So far the amazon.com/unbox URL is redirecting to a plain-vanilla DVD page, but if all this word on the street proves true we should be seeing it up in the next few hours.