Two pre-production F-10SEPs (built by rebuilding the original prototypes) have been delivered to the DDSAF Development Team to begin final flight testing of the upgrade fighter ahead of production in the Summer. The F-10SEP is the next major version of the standard DDS fighter since the F-10S itself.
The SEP has an improved wing to aid agility and fuel efficiency, a revamped databus, improved stealth characteristics including reduced IR emissions and compatibility with a new air to surface missile the DDS are working on and the future air-launched version of TPM-2.