The first batch of F-10S Shark 2100 fighters will be upgraded to the SEP standard which is the standard of the third batch which will begin construction later this year. The modified F-10S will have the wing and other aerodynamic improvements, the new databus and IR emission reduction.
The second batch, the F-10SIM will also be upgraded at a later date, probably when there are enough new build SEPs to allow for the planes to be taken out of service.