Scott also mentioned that the new glass coming out was getting much better because the sensors (see the post below) are getting great. Well, the first reviews of the Sigma 35mm F/1.4 DG HSM are truly amazing at $900 vs$2K for the Canon equivalent...

The Sigma 35mm f/1.4 is the finest lens I’ve ever used from the company. It has impressed me more than many of Canon’s own primes. Perhaps some of that is a bias because my expectations were slightly lower or I was at least cautiously optimistic about this offering. Either way, I have been thoroughly sold on the lens and have given up my quest for a Canon 35mm f/1.4L, even if Canon does replace their lens soon (which they should). It will likely retail for close to \$2,000, putting the Sigma at half that. Canon would have to offer a significant amount of value for anyone to want to consider that over the Sigma, except possibly the most die-hard of Canon fans.