In your Sarah Palin update for the day: TMZ.com reports Joan Rivers has been bumped from tomorrow’s Fox & Friends for criticizing the Fox News analyst. Over the weekend, Rivers said Palin was, “stupid and a threat.”

Update: The Wrap reports that the “F&F” booker was supposed to re-book Rivers for another show, not cancel the appearance altogether.

Rivers was scheduled to appear with daughter Melissa tomorrow on the show to promote her new show, “Joan and Melissa: Joan Knows Best?”  Rivers’ rep tells a producer called to say they gave her the chop because of Joan’s comments.

Meanwhile, on another network … and another network, MSNBC’s Mika Brzezinski is being accused by Comedy Central’s Stephen Colbert of having “Palin fatigue.”