According to information from Walmart, the retail giant will exclusively offer two movies from the western genre (one of them from the Aussie variety) on Blu-ray on May 24, both from the MGM/UA library:
The Big Country (William Wyler, 1958), starring Gregory Peck, and
Quigley Down Under (Simon Winder, 1990), starring Tom Selleck.
No information on specs or special features is available at this time.
Thanks to forum member "larry47591."