I hope that this building happens - Gehry has a lot of unbuilts in his portfolio. He also has a big habit of going WAY over budget (look at the American Centre in Paris - a building that put the client out of business) so I hope that Dilller is prepared to spend twice whatever is the announced budget.
The Gehry building I have just begun working in has an official cost of $54 million, original est $26 million, those of us involved believe actual expenditure around $62.
Gehry also in meetings makes clear that he believes in what must be called "form OVER function" - the smaller theatre at Bard has a near useless too-short fly tower because of his vision for the outside of the building. On the other hand, he has some great people working for him, who want to make buildings that really serve for the client - which sometimes make for odd conflicts in the design meetings.