http://www.findarticles.com/m0EIN/20.../article.jhtml
If they can make is to new DDCDs can be read by "old" (in respect to the DDCD) CD-ROM Drives...I'll be very happy. I doubt that will actually happen.
I will certainly by a DDCD-RW when they come out, and if they come out and prove better (or cheaper) than DVD-RWs