According to 9to5mac.com, the site which initially 'leaked' the spy shots of the new Apple Nano, the new MacBooks are coming. Actually, the site's writers think they're MacBooks, but they may just the fabled MacBook Pro Slim line daw...

Anyway, their features are:

As taken from http://www.9to5mac.com:
  • Black aluminum and silver aluminum (like MacBook Pros) have been seen
  • They are considerably slimmer than current MacBook and even a bit more than MacBook Pros
  • The screen reaches much closer to the edges than current MacBooks but is the same size as current MacBooks - indicating a somewhat smaller footprint
  • The keyboards resemble Apple's new Bluetooth Keyboard
  • There is something strange about the touchpad (more on this to come)
  • They are set to be priced extremely aggressively
  • While they are dense, overall they are lighter than the current MacBooks
  • Possibly no DVD drive