This is a case where the official story is not accurate. It was a Viper which splashed the Mig. That's what I initially heard from within the PAF and it was later backed up by reliable sources like Kaiser Tufail. The pilot which got the kill was also later revealed to be a Viper pilot. But this was problematic, geopolitically, because India was crying on television and asking for US sanctions, because we used Vipers in that engagement. Which is why the Thunder was given credit.
The Thunders successfully carried out the Strike role on that mission, along with the Mirage. That's a big win for the Thunder. The Tejas on the other hand, was nowhere to be seen that day. The IAF hid the Tejas in a base in Southern India, far away from any active borders. Lest we forget, the Tejas was supposed to replace the Mig-21, the same fighter that was splashed by the PAF that day.
Going forward, I think the Block III will be tasked with Air Superiority exclusively, because it's slated to replace the remaining F-7PGs, which only exist in the two Air Superiority squadrons in the PAF. I think the Vipers will be shifted to Strike, along with Block II's and Mirages. We'll have enough multi-role platforms to carry out ground-attack, which will allow the Block III to take on specialized air-to-air missions. That's where its AESA and (hopefully) PL-15s are most needed. It will take at least a year after induction though before it's deployed in this role. The CCS squadron at Mushaf will need to develop and test new tactics utilizing its new capabilities first. The Shaheen exercises with the PLAAF will help speed this process up considerably.
I was talking about the Iranian drone.