"In an effort to ease the transition to higher-capacity disc technology, Toshiba and Memory-Tech have developed a dual-layer disc that supports DVD and HD DVD formats. A smooth shift from the old technology should make it as convenient as possible for consumers and device manufacturers to upgrade from DVDs to the next-generation DVD format without having to toss their old discs. The companies announced the joint development and detailed the new disc's capabilities Tuesday in Tokyo. The disc will be single-sided, with the upper layer storing up to 4.7GB of data in the DVD format and the lower layer holding 15GB of HD DVD data. Memory-Tech will produce the read-only discs. Manufacturing costs will be comparable to those of single-sided, dual-layer DVDs or HD DVDs. The discs are expected to reach stores in late 2005, as are HD DVD players."Finally we have a solution that supports both blue-laser and red-laser technologies. An easy transition to HD DVD will enable more people to get on board. Much like DVD video disks got people to upgrade their audio to 5.1, the HD DVD logo on the back should get them interested in buying HD DVD players.