Telltale Games, the studio behind games like The Walking Dead and The Wolf Among Us, is closing its doors, now confirmed by Telltale Games on Twitter (see underneath).
— Telltale Games (@telltalegames) September 21, 2018
It seems likely that The Walking Dead: The Final Season will be finished by the remaining staff, but nothing has been confirmed on that front yet. We will get back once we know more. As for the sacked developers, the community has gotten around to find them new jobs.
Source: Telltale games