Apple's PowerBook G5 teaser? Or do we just have too much time on our hands?

Alright conspiracy theorists, time to figure out why exactly this little bit of HTML is buried in the source code at
http://www.apple.com/powerbook/:

<!—BEGIN AVENUE A—>

<img height="1" width="1"
alt=""
src="http://switch.atdmt.com/action/apple_g5_powerbook">

<!—END AVENUE A—>

body>

html>

Either we're through the looking glass, people, or someone at Apple has a very sick sense of humor.

[Thanks, Gavin]