When does Designated Survivor return?

Designated Survivor is an American political thriller drama television series. It aired for three seasons, first on ABC and then exclusively on Netflix for the third and final season. Kiefer Sutherland stars as Thomas Kirkman, an American academic named as the designated survivor for the State of the Union address.
On the night of the State of the Union, an explosion destroys the Capitol Building, killing the President and everyone in the line of succession except for Secretary of Housing and Urban Development Thomas Kirkman. Kirkman is immediately sworn in, unaware that the attack is just the beginning of what is to come.