Paul Hewitt has been upped to the top PR post at the CW, succeeding Paul McGuire, who yesterday was named SVP worldwide corporate communications for Warner Bros. Entertainment. McGuire, in turn, succeeded Scott Rowe who was promoted on Tuesday. Hewitt, who had served as VP corporate communications since the CW’s launch in 2006, has been promoted to SVP network communications, reporting to entertainment president Dawn Ostroff. In addition to his PR duties, Hewitt has been doing executive speechwriting and is known for writing speeches for CBS Corp. CEO Leslie Moonves. Hewitt previously served as director and VP communications at UPN from 2002-2006.