Can you confirm for sure that Jinshanling is going to be closed from 1 June for renovations?

Is there ANY possibility at all that the closure might be delayed? We arrive Beijing on 16th June .. Sob Sob. Was coming to walk Jinshanling and out of nowhere they close it. Understand they need to do work but soooooo many people going to be disappointed by this, especially given Simatai West still closed.