WHZZ-FM (101.7) Lansing has dropped its fairly successful CHR format in favor of a "Jack" style format, rebranding itself as "101.7 Mike FM". The new format, which is currently running without live announcers, features a mix of 70's, 80's and 90's hits. WHZZ's parent company, MacDonald Broadcasting, implemented a similar format on sister station WMJO-FM Bay City last year, and has enjoyed reasonable success with the format in the Tri-Cities market.
This effectively ends speculation that Citadel's WMMQ-FM might adopt the "Jack" format in light of the departure of morning host Tim Barron. However, WHZZ's switch to this format is a total surprise, since their CHR format was garnering respectable ratings. I guess the next question is, who, if anyone, will pick up the CHR torch in the Lansing market?