I'm no expert, but after doing some research, and examining my MGM DVD's closely, in my opinion there is no merit whatsoever to this lawsuit against MGM concerning their widescreen DVD's. The movies in question were shot in an matted (or framed) widescreen format in the beginning. That way, the filmmakers can crop the movie the way they intend for the theaters and another way for television. I won't go into details here on how the process works, far too long a post if I do. I direct you to this page for a full explaination of the process.
Most films in the last two to three decades were filmed using the matte process, with later TV showings in mind at the time of filming.