Digital series will “keep viewers up to speed on Black Twitter’s buzziest conversations.”
The news and information network is scheduled to launch in November.
Hall left NBC News in February 2017.
The broadcaster said the tweet was “supposed to be a joke.”
“WJZ was forced to let me go. I am saddened and shocked by this decision,” Mary Bubala said.
News of the cuts comes after CNN’s parent company was acquired by AT&T.
Network’s news chief announced the “start of a new era for CBS News.”
Network plans eight hours of news a day, programming VP Gary Wordlaw tells Urban Hollywood 411.
Whitney Davis worked at the company for 13 years.
Music artists, including The Game and Justin Bieber, have called for Fox News to fire her.