I was there yesterday and it still had the same barricade around it. The BTTF building is still there and still looks the same so I wonder how different the new ride will be.
They do have a Kwik-E-Mart operating and a Simpsons "motorhome" complete with tacky awning and a case of donuts on the roof, plenty of Duff beer, etc. and plenty of photo-ops with the whole Simpsons family (no Maggie)