As it should. After all, no-one complains about the amount of times that the Lord Of The Rings books are reprinted.
Admittedly, they don't have any more scenes than when they were first released
I wouldn't have been surprised if there'd been a DVD release announced around about now, though. Star Wars is back in the public consciousness with The Clone Wars and...well, it is only two months to Christmas.
Seriously, though, I think the films should have a theatrical re-release every so many years, just so each new generation is introduced to the story (there's no doubting its profound effect it has on kids). Same for LOTR, too, for kids a bit older.