This screenshot from Comedy Central's presentation reel explains the changes, and names the new symbol the "Comedymark".
The Comedymark with other social media icons.
The reel repeatedly shows the Comedymark put up to the right of network's characters, as a mark of approval.
A mock-up of what outdoor advertising can look like with the new mark.
Another example of outdoor advertising
Another part of the reel shows the Comedymark "vomiting" up the name of the network.