According to TVShowsOnDVD.com, Samantha Ferris' (Ellen Harvelle) Impact will be released to DVD on September 1, 2009.
Special features:
* All-New Featurette: Making of Impact – A behind the scenes peek into the making of the miniseries.
* All-New Featurette: Creating Zero Gravity – Witness the creation of the visual effect that send a passenger train hurtling weightless through the air.
* Deleted Scenes
* Widescreen Presentation
* Audio: English 5.1 (Dolby Digital)
* Subtitles: English
* Closed Captioned
For more information, click here.
Source: TVShowsOnDVD.com.