EXCLUSIVE: The changeover at the top of CBS’ entertainment operations continues. I hear Thom Sherman is stepping down as Senior Executive Vice President, Programming, CBS Entertainment and is getting an expansive production deal with the company. The move follows the news broken by Deadline earlier this morning that CBS veteran Kelly Kahl will be leaving his post as President of Entertainment at the end of the year. I hear the network’s head of current Amy Reisenbach will be named new President of Entertainment.