So, are you starting to get confused by all the different Xbox 360s out there? Let's see, we've got the Core, Premium, and Elite. That's pretty easy. Then there's the Halo 3 Xbox 360. Oh, and if you want a Premium with HDMI, you'll have to do some more digging, too. Let's not forget the Xbox 360 Arcade, which probably means there won't be a Core anymore. See, getting confusing, right? Look out then, because there just might be another SKU joining the mix. According to Stuff.tv, some unidentified GameStop employees have uncovered a new SKU dubbed 360 Ultimate. So, what's in the package? A built in HD DVD drive and a 320GB hard drive. That's it actually. Some are guessing that this is the rumored Xbox built with IPTV in mind, though we're not convinced that Microsoft would launch yet another new Xbox 360 anytime soon. Take it with a grain of salt, and start bugging Microsoft for some details on IPTV while you're at it.