The third X-Men DVD, for only the second feature, might have a realease date.

X2 – DVD 3
Numerous reliable retail sources are reporting that 20th Century Fox has a November street date planned for its DVD release of X2: X-Men United.
Official confirmation should come in the next day or two, along with cover art and full specs. According to our sources, extras on the 2-disc set will include anamorphic widescreen video, Dolby Digital 5.1 audio, numerous behind-the-scenes featurettes and a multi-angle sequence among other features.
Its expected that the film will also be available in a specially priced 2-pack with X-Men 1.5.