Wasn't the WS-17 originally designed to replace the Ukrainian AI-222 for the JL-10? If there is talk about WS-15 being used for the JL-10 now, you have to wonder what's going on with the WS-17 "Minshan", it would certainly be strange to have both unless perhaps... they're for different roles perhaps?
No. "WS-15 on JL-10" is just some ignoramous stuff coming out of those authors of CMPR 2024. There is absolutely neither plan nor possibility for WS-15 to be installed onboard any JL-10 without significant changes to the aircraft itself, such that Hongdu AC might as well design a brand new trainer aircraft from scratch.
Also, the WS-15 is sorely needed by new J-20As that will be rolling off the production line starting in 2025. There is also the consideration where some kind of WS-15-variant will be used onboard China's J-XD, H-20 and high-end loyal wingman UCAV too. Therefore, there will be no spare production capacity for the WS-15 to be used on anything else for the foreseeable period of time.
As for the WS-17 - Perhaps the engine just isn't that high on the PLAAF priority list compared to other, more critical engines (WS-15, WS-19, ACE WS-XX etc), given its relatively limited applications - And that perhaps Russia is still deemed capable of fulfilling China's orders for the Al-222-25 engines such that a domestic replacement isn't as urgently demanded.
However, given that Yankee in 2022 said that they “recently” restarted investigation into domestic engine development for JL-10, I believe we may actually see WS-17-equipped JL-10 in the future. Just don't expect it to happen anytime soon.