I'm not sure what the point is but Sony is about to release a double density CD-R/CD-RW burner. 1.3gig on a CD. It appears you need special Double Density CD−Rs but the price appears alot lower than DVD−RAM although really I haven't been following the price of DVD−RAM.
The problem is of course that nobody could read your DDCDs on their SDCD drives.
If this is old news excuse me. I've banned myself from Slashdot as of about 2 or 3 weeks ago in an attempt to get better at Japanese. My only news source is currently www.ascii24.com.