There's a good reason for that. These are going to run Windows 8, they have to, but Windows 8 isn't coming out for months yet. If they announced these the day of Windows 8's release they'd lose out on a lot of business because people would have already made other purchasing decisions in the interim. Windows 8 ready ultrabooks, ipads, etc. Now they're giving people enough time to change their minds before they've pulled the trigger and spent their money.