Must be out despite the no news from the volant website. Stillen now has it listed:
http://www.stillen.com/Supertrucks_detail.asp?cat=2&subcat=187&Brand=&id=65919&page=1

Not a bad deal either at $310-

Not bad. Right now I have other areas to spend my $$$.

What exactly do air intakes do?

They take in air.

Well usually they provide a bigger filter with more surface area to allow more air in.

volant moves the openning of the stock air intake to a location on the X that allows for cooler (no air warmed by the engine) air into the engine. Cooler air increases the performance and efficiency of the engine.

A snorkel provides cool air.

If you want to see what it does, take a ride with me with my scanner. Air temp drop immediately. Cold air = dense air + more volume with a larger filter.