Yeah it's true, I was able to visit their facility at VCV
back in February and I was able to go onto both 747's before the 744 left for HKG
I believe. The 741 still had the PA carpet and some of the first class seats, it was really awesome to be on that plane. They did tell us that the 741 is going to fly for 2 more years and then will be retired. There are no plans for it yet but it could wind up being donated to a museum. It cannot be sold to anyone for any kind of flying operations though.
The 744 is registered N747GF and we were told that when the 741 is retired the 744 will take on N747GE.