Comedy Central already wants another dose of Inside Amy Schumer, so the network’s ordered a fourth season even though the third hasn’t even started. Schumer herself revealed the news on David Letterman’s Late Show early Tuesday morning. “I just found out,” she told Letterman. (Hmmm … where have we heard that before?) Season three premieres Tuesday at 10:30 p.m. and promises a Bill Cosby sketch and lots of cameos. Yes please, and thank you.