Season 4 DVD and Blu-Ray available for pre-ordering

Update: 18th May Amazon have a special price for the Season 4 DVD's if you pre-order them. $38.99 for the DVD and $66.95 for the Blu-Ray.

The Season 4 DVD and Blu-Ray Releases for Season 4 are now both available for pre-ordering.

USA Version - DVD
USA Version - Blu-Ray

UK Version - DVD
UK Version - Blu-Ray

Canadian Version - DVD
Canadian Version - Blu-Ray

Thanks to Silent Impression for the Canadian Links