From Defense Media:

Boeing delivered the first of 14 E-3A Airborne Warning and Control System (AWACS) aircraft with cockpit upgrades to NATO earlier this week.

The Communication Navigation Surveillance/Air Traffic Management (CNS/ATM) digital flight deck and avionics enhancements bring the aircraft into compliance with current and future air traffic control and navigation requirements along with other upgrades, and allows the flight crew to be reduced by one.