Taiyo Yuden has certified their 40x media for 48x after extensive testing
http://www.cddimensions.com/cd-r_med...dr80zzsb40.asp
Jim, copy and pasted the above from the above link. It's the only one I've found searching the web. Most are still carrying 24X and did see one 32X. I guess it's coming. Mitsui still has 24X as far as I can tell.
George