I have *NO* idea what drives will support it, but Maxell has just confirmed that they are just finishing 4x DVD-RAM, and it should be available sometimes in May 2004.... of course they told me 3x DVD-RAM would be available in October 2003, and now they are telling me January 2004... so the release date could easily be pushed back a few months, but the info is solid. 4x DVD-RAM is a reality. We may yet still see 16x DVD-RAM in the future!
Gosh, I hope Maxell doesn't get mad at me for spilling the beans too early!