U.S. Air Force photo by Technical Sergeant John McRell.
On 11MAR2021, Boeing delivered the first production F-15EX to Eglin Air Force Base (AFB), Florida, for testing and evaluation.
USAF photo by Technical Sergeant John McRell.
The 96th Operations Group 40th Flight Test Squadron, and 53rd Wing 85th Test & Evaluation Squadron, will put the F-15EX (aka EX1) through the mill.
USAF photo by Technical Sergeant John Raven.
Can you spot EX1?
USAF photo by Technical Sergeant John Raven, 11MAR2021.
USAF photo by Technical Sergeant John Raven.
USAF photo by Staff Sergeant Joshua Hoskins.
The F-15EX is hard to distinguish from the F-15E Strike Eagle. A couple of ECM ‘ears’ protruding on the sides of the cockpit. The blade antennae are different. The pods on top of the tail fins are now symmetrical. Some ECM bumps protruding from the rear.
USAF photo by Staff Sergeant Joshua Hoskins.
F-15EX arrives, parks next to F-15E, video by Jennifer Vollmer:
Official USAF video report, reveals that while it is a two seater it actually needs only one crew to operate:
Official USAF music video:
EX2 is also expected to make an appearance over Eglin AFB, soon.
Vehicle I-D, February 2021: 
F-15EX-CITEMENT!