The network signed on Stewart to a four-year production deal after he ended his stint on "The Daily Show".
HBO programming president Casey Bloys spoke about Stewart's project at the Television Critics Association's summer press tour recently, reported Variety.
"The idea is it will be an animated parody of a cable news network with an Onion-like portal," Bloys said.
The project will be structured to allow Stewart to release multiple pieces of short-form content - video and text - through HBO's digital platforms, but will also include a linear-television element, likely in the form of a half-hour series.
"It will be simple animation... But it does allow him to respond fairly quickly to what's going on in the day's news.