Strictly speaking, this is not a retailer exclusive but a Warner Archive release. However, retailers don't usually stock Warner Archive titles, though Amazon.com and BestBuy.com both have this one listed. This Blu-ray will include both 1.78:1 and open-matte 1.33:1 transfers.
It appears that the only extra will be the original theatrical trailer. However, there was an "HBO First Look" with some decent behind-the-scenes interviews.