I was talk to one of the Monorail disney castmember and she say that the monorail will close around september. So disney can work on the queue line for the sub and the monorail.
She do not know if the work around Club buzz -lightyear's in part of the monorail work.
disney may use part of the building for the new station. I know there are old posting about it and I did not find where their are location.
One had a map of the new station be location.