Wie einem Press Release vom 27.10.03 von Diamond zu entnehmen ist existiert die Firma wieder und wird Grafikkarten mit ATI und Nvidia Chips bauen.
Es gibt auch schon eine Homepage, wenn auch nur eine TeaserPage. Klick mich
Hier der Text der Pressemitteilung auf Englisch:
Los Angeles, California – October 27, 2003 – Diamond Multimedia®, a pioneer in the graphics industry, today announced its return to the consumer graphics market with plans to launch next-generation graphics accelerators under its legendary Stealth® and Viper® brands, two of the most well-known and respected retail names in graphics history. Continuing the tradition of these brands, the Stealth product line will offer a full series of value-based cards while Viper will target high-end gamers. True to its heritage, Diamond will continue to remain chip vendor neutral, offering consumers products from multiple vendors to provide maximum performance and value at each price point.
The first new Diamond products will begin shipping in November and are planned to feature technology from both of the leading graphics chip vendors, ATI and NVIDIA. As with previous Diamond products, the new lines will include bundles of popular software titles and additional offers and will be available at national retailers and through distribution.
Ich persönlich hätte nicht daran geglaubt, daß Diamond noch einmal zurück kommt. Um so schöner zu sehen, daß sie es doch tun 
Quelle: Rage 3d
Oder gibts Catalyst von Sapphire? 