Don't give up hope that your Great-Uncle will be found. I read that article also and it did encourage me that many of our lost WWII MIA's may be recovered. After I read that article I Googled this organization - World War II Families For return of the Missing
Perhaps you can contact them for assistance in locating your Great-Uncle. Let us know if there is anything we can do. All of us want those men who went missing brought home.
Again, thank you for stopping by to provide that helpful information!