Audi is already going to draw plenty of attention at the Detroit Auto Show with the V10 version of the R8 sports car, but that's not the only trick up Audi's sleeve. The company has announced there is going to be a surprise on the stand when the show opens on Sunday.

We don't even need inside sources to make a pretty guess that this “surprise” will be the A7 sedan/coupe. The Mercedes CLS competitor has been long-rumored for Detroit.

We'd love it if we were wrong, and Audi have really surprise us with something completely new. But as sales are slipping and projects are being killed off, there are very few secrets still out there in the automotive world. Plus, it won't be bad to finally lay eyes on the A7 either.

When the surprise hits, we'll pass it along.

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