I assume you mean Dual Layer DVD-RW media as opposed to recording hardware.
Searching around on the internet, the only thing that I can find is DVD+R. They are about $9 each.
Looks like the media people are behind the curve.
The same thing happened when they came out with 4X DVD burners. There was no media available for several months.
Does anyone know if there's any company which manufactures Dual Layer DVDRW - or +