This is excellent news - I so hope it is true and that they turn up.
A while ago, I started watching the old Doctor Who episodes from the very first episode broadcast in 1963. Unfortunately, when you get to the fourth arc (starting with episode 14: The Roof of the World) you get to the missing episodes where they have tried to recreate the stories from the audio tracks and from still photographs. These episodes are completely unwatchable in my opinion.
So if they were to find some of the missing tapes it would be all made of awesomeness and it would be fabulous to be finally able to watch those episodes.