Mitsubishi Chemical has announced that they will be releasing their "ARLEDIA" DVD-R media to the Japanese market in late March. These archival grade discs feature DYN-AZO dye and a Au/Ag (gold/silver) reflective layer which offers twice the lifetime of conventional DVD-R media. Here's part of their press release, translated from Japanese:

Mitsubishi chemical media Ltd. (The headquarters: the Tokyo Minato Ward and president: Otsuka heavy morality) will put one DVD-R for the long preservation to preserve important data for a long term 'ARLEDIA' on the market by packing in the end of March.

The chance to preserve important memories of a private image and the image, etc. as data has increased by the spread of the digital camera and the video camera. Strong DVD-R was developed in compliance with the demand from a lot of users that it wanted to leave data for a long term safely in that long preservation.

ARLEDIA (the Al redia) with the designation from of Au/Ag Reflective Layered mEDIA, in the reflected membrane of the disk the gold (Au) with the silver (Ag) (the gold and silver reflected membrane),durability of the disk was raised by the fact that you use. Until recently in comparison with the item, long-term conservation (long-lived) is the disk archival which it improves. The gold which is strong in aged deterioration, the respective merit of the silver where the compatibility for drive is high was utilized.
Mitsubishi's ARLEDIA DVD-R media is expected to cost about 600 Yen ($5.70US) per disc. Full details can be found here.