Different parts of the Boardwalk have closed at different times to be refurbished or changed. ESPN Club is gone, still under construction to become the Cake Bake Shop. The Bakery became the Deli, and BW Ice Cream opened. Live entertainment is back in the evenings, and Big River Grille is fine! So most of BW is open again, just different from years past.
As with every refurbishment, parts of the resort are closed, but the rest remains open. Yo just have to put up with the renovation noise during the day if you stay at the resort.