Apparently, the Rivers' time as AFR midday hosts ended in May (normally I listen to the Talk format; so I just learned of this today and I see that hasn't been brought up yet).
http://www.allaccess.com/net-news/archive/story/118116/jon-sherry-rivers-depart-afr
Also, it appears as of yesterday Jon's voice is no longer being used on promos for various ministries AFR works with (I believe I still heard his voice on the Sandy Rios show; so maybe he's reduced his role to doing intros)
http://www.allaccess.com/net-news/archive/story/118116/jon-sherry-rivers-depart-afr
Also, it appears as of yesterday Jon's voice is no longer being used on promos for various ministries AFR works with (I believe I still heard his voice on the Sandy Rios show; so maybe he's reduced his role to doing intros)