...Sounds like someone banging bricks together, doesn't it?

But really, WAIK is an acronym for "Windows Automated Installation Kit"

This is the toolset that IT Pros are going to want to get to know well, because it contains tools for imaging, installing, and deploying Windows Vista; including tools like IMAGEX and the System Image Manager. 

Wanna build your own WinPE (Window Pre-installation Environment) bootable disk?  Included are the tools that will let you do that.

It "RTW'd" (Released to Web) just two days ago.

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Props to Keith Combs for pointing this out first.