I have quoted russia kid because that engine will come with pakfa/fgfa
We are in no hurry to produce engines,,,,rafale will come with french m-88.
We already have rd-33 and al-31 for mig-29 and su-30 respectively.And su-30 will be upgraded to 117s of su-35 soon enough in mlu.
Chinese have no excess to these engines and are stuck with a relatively old /not so good al-31f and rd-33/93 so they need some alternative.
For tejas we are using ge-404 for mk1 and ge-414 for mk2.
The kaveri engine project has been disbanded as it cannot produce the required wet thrust of at least 85 kn,it achieved thrust in 70's plus it was overweight.The newer engine plan is to develop a 115 kn class engine with foreign assistance and as of now no one knows what happens with it.
last i heard China is acquiring su-35s with 117s, it will be just a matter of time China start producing them, also I have not heard any engine upgrade to existing MKI, it doesn't make sense to upgrade engines of twin engine fighters which already have expansive engines, any source?

I thought Japan is already building its own stealth Fighter? Or Japan wants to operate both at the same time? Thats alot of moneyyyyy. Lets see how things play out. It will be great for Japoan to go for the F-35 though, they are the best of their kind out there. It will boost Japans air capabilities alot. Jpans own stealth fighter will take decades to come to fruition/production/operational to be honest, since its still just started with tech demostrator. So Japan should go for the F-35 (which i guess the Japanese government seems to have understood, and is doing).