Last Nimitz class carrier. The next generation CVN_21 carriers are already being designated as the Ford class. CVN-80 will be USS Gerald Ford.
CVN-78, first of the new class, will be the Gerald Ford. Done deal. The question is what to name CVN-79 and 80.
The current Enterprise will be out of service by the time CVN-79 comes along. Should be a no-brainer.