Neither the new 11-inch MacBook Air, 13-inch MacBook Air, or 13-inch Retina MacBook Pro has Boot Camp support for installing Windows 7, according to this support document. It's also likely that the new 12-inch Retina Macbook won't have support for the older Microsoft operating system.
We'll let you know if any third party install instructions surface for those who would still like to use that operating system with their new MacBooks. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.
Read More [via Leah]