It appears that they are going to be sending the canard equipped F-15 testbed to the boneyard. (Paid subscription required)

Originally called the short-take-off/maneuver-technology demonstration (SMTD) about 20 years ago, the aircraft was originally equipped with F-18 tail derived canards, square thrust vectoring nozzles, and a redesigned landing gear intended for rough field operations.

It demonstrated impressive improvements in STOL peformance and agility.

NASA is currently using it to research its quiet boom supersonic aircraft technology, as they felt the need to test a canard equipped airframe as one of the configurations.

When they are done, it’s going to the boneyard.