Before you go see "Indiana Jones and the Kingdom of the Crystal Skull" when it debuts (finally!) next week, you're probably going to get the urge to see the first 3 Indy flicks first. Most of the hardcore fans already have the set but for those who don't, Lucasfilm and Paramount have just released an updated version of the Indy dvd box set that was first issued a few years back.
The movies are still the same. Spielberg hasn't unearthed any 'lost' scenes -- and frankly, I don't think I'd want him altering any of the Indy films. They're classics AS IS. The main difference is in the extras. Each film comes with new intros by the principals, 'making of' documentaries, storyboards and interviews with the actors. Much of this stuff was found in the original box set but if you don't have that one, this is the one to get because it's in a space-saving slipcase with the all-time best Indy image ... from the 1982 re-release poster.
Oh, and if you're not a fan of "Temple of Doom" -- something I can't fathom, because I think it's a woefully under-appreciated movie -- for the first time, the first three Indiana Jones movies are available separately.