I'm not sure if you guys saw the latest announcement from Pioneer and Mitsubishi Chemical, but they've developed a new organic dye for BD-R discs. These new discs will correspond to the "Low to High" (LTH) recording system so they're expected to be cheaper to produce.
The big catch here is that they're not compatible with current BD drives. Right now, drives use a "High to Low" (HTL) system and its unknown whether or not they can be tweaked to write to these new discs.
To sum it up.. starting next year, we're going to see two types of BD-R media on store shelves. The normal (HTL) and this new LTH media which may or may not be compatible with older drives.
Just wait til the HD DVD fans get wind of this...