Emmy producer Don Mischer revealed the news during the Emmy red carpet roll-out event Aug. 20.
Williams died Aug. 11 at the age of 63.
Following the news of Williams' death Crystal tweeted "No words."
No words.— Billy Crystal (@BillyCrystal) August 12, 2014
Williams starred in a number of theatrical productions, including Mike Nichols’ 1988 Off-Broadway version of Waiting for Godot, co-starring with Steve Martin; and his own one-man show, Robin Williams: Live on Broadway. In 2011 he made his acting debut on Broadway in the title role of Rajiv Joseph’s drama Bengal Tiger at the Baghdad Zoo.
The Emmy awards broadcast, honoring excellence in television, will be hosted by Seth Meyers.