Our friend Jason tipped us off to several photos at M3post.com, purportedly showing a prototype of the E92 M3 CSL making the rounds at the 'Ring. While we're not entirely convinced that this particular mule is the CSL, some cues, like the ducktail spoiler and what appears to be a wider track, make us think thrice.

If it is the M3 CSL, which BMW has practically admitted is coming, expect it to drop a few pounds and come equipped with more track-friendly accoutrements. Realtor's wives need not apply.

[Source: M3post.com]