Just heard back from someone at WGN America who responded to my e-mail inquiry. Here it is for what it's worth:
Thank you for your inquiry. Your opinions are very important to us.
We know that Chicago’s very own WGN News has many loyal fans and we are committed to continue making these news programs available to our viewers. In recent months, WGN America has been evolving its programming direction to best serve the interests of our national audience. As a result, certain programming changes have and will be made that we hope will achieve the objectives and interests most important to our viewers everywhere.
“WGN News at Nine” is no longer seen on WGN America but continues on WGN in Chicago and worldwide online at www.WGNtv.com, where all WGN Chicago newscasts are streamed live.
Unfortunately, league rules prohibit video streaming of the sports segments.
We apologize for any inconvenience, and thank you again for writing and watching WGN America.