I don't understand why the BBC just doesn't get out front of this story and make a statement either way. If Morris did return their property as it appears, there is nothing to negotiate. They should be hyping this and building the anticipation.
Side question, does anyone know if the BBC has announced lost material for other shows/films since 2011? Perhaps they would've announced them even if not Doctor Who? That could be something to check out, but I didn't find anything during a quick Google search.