I seen an 07 here in canada at the dealer that had the supercharger along with HUD and tapshift.

At the time I was looking for my grand prix and a vin decode on compnine.com confirmed it had tapshift and hud right from the factory.

Also most if not all GXP's 05-08 had tapshift.

If you enter the vin of the 07 being talked about here;

Comprehensive Chevrolet, Saturn, GMC, Hummer, Cadillac, Buick, Oldsmobile, Pontiac, Geo, Dodge, Plymouth, Jeep, Chrysler, Ford, Lincoln, Mercury, Mazda Truck, Mercedes VIN Decoder

I bet it will come back as having the tapshift option(KB7) and the heads-up (UV6)