Show which will air on weekday mornings debuts in fall.
Does not believe former Patriot tight end committed murder, suicide.
Network will also introduce eight new series next season.
Mocks the hot-tempered WH press secretary Sean Spicer.
NBC would not comment on the video.
Kristi Hoffman will host show, which debuts Thursday evening.
Julia Roberts, Jack Black, DJ Khaled among those to take part in fund-raiser.
Talk-show host’s warnings to staff set social media abuzz.
Deal also includes using Periscope and Twitter for pregame coverage and more.
Katherine Ann Berman, 67, was one of two victims Tuesday.