Good news for those who have thus far managed to hold off on turning their HD-DVD collection into garden mulch: Warner today introduced Red2Blu, offering to let users "trade up" their Warner Bros. HD-DVD discs for the same Blu-ray titles.

Users can trade in their discs by visiting Warner's Red2Blu.com site. They can claim "virtually any" Warner title, up to 25 discs. The trade includes shipping and handling prices and a "small fee." It's available only to U.S. residents.

The company has also launched a "Warnerblu Buy 5 Get 1 Free" promotion, which lets users pick up one select Warner Blu-ray disc with the purchase of five.