The Long Goodbye (blu-ray and Dvd)
 

The Long Goodbye (Blu-ray) (Kino Lorber)
The Long Goodbye (DVD) (Kino Lorber)
The Long Goodbye (DVD) (MGM)
The Long Goodbye (Blu-ray) (Arrow)

Kino Lorber versions are released on November 25, 2014.
Not sure what extras will be on them.

As things stand, get the Arrow version as it has the most extras:

• Isolated Score
• RIP Van Marlow, with Robert Altman and Elliot Gould (24:35)
• Robert Altman: Giggle and Give In (56:32)
• Interview Elliot Gould (53:05)
• Interview Vilmos Zsigmond (14:23)
• Interview David Thompson (21:04)
• Tom Williams on Raymond Chandler (14:29)
• Maxim Jakubowski on Hard Boiled Fiction (14:33)
• Radio Spots (3:24)