Lieven has a wonderful review of the new HD800s headphone on Headfonia with extensive comparisons to the original HD800.  I agree with Lieven that the HD800s is reaching out to a broader market by bringing out more lower mids and bass.   I recently compared the HD800s with my original HD800 and have decided to keep the originals.  Read the review and see which headphone Lieven likes more.

Review of HD800s