This is video from Today seminar on Air Power conducting related toward TNI-AU 76th birthday. This is only 1st half of the seminar, there's 2nd half of the seminar.
However for me, the interesting part is in 2:12:00 when TNI-AU speaker talk on the progress building and preparing TNI-AU for complete Hybrid Warfare. Previous speaker also talking on Hybrid Warfare, and basically shown TNI-AU has to build 4th gen warfare first before can move to 5th gen warfare.
This is one of reason why Indonesian MinDef purchasing 4.5 gen Fighters like Rafale 3R (so the version is not Rafale 4, but seems upgradeable to that) and F-15IDN. The speakers simply say TNI-AU is not ready yet for 5th gen, as the infrastructure development is not ready yet.
One thing interesting what TNI-AU aim on UCAF is that asside for ISR use, but also on COIN warfare. Clearly TNI-AU knows the advantage of supporting assets on C4ISR, AEW, and Force multiplier like Tankers etc. In this seminar they are clearly shown building AF with only new fighters is not enough.
At 2:45:00 RAAF speaker shown step that you need to build 5th gen warfare capabilities. Seems TNI-AU inviting RAAF speaker to shown that building 5th gen capabilities is not same than just procuring 5th gen Fighter like F-35. This is part I believe on public awareness, as they are talking in media, publics even Political circles on question why spending billions of USD on Rafale and F-15, and not on F-35.
Later part of video shown presentation from Dasault on Rafale 3R and Boeing on F-15IDN. Interesting on TNI-AU part, they shown IFX on slide on preparation building 5th gen capabilities.
So seems program on 4.5th gen clearly aiming for Rafale 3R and F-15IDN, but IFX still in the program. Well lets see how they are going to finance this. As even getting Rafale and F-15 are already stretching budget much. If IFX still progressing, then basically it will replace both F-16 and Flankers.