Hasn't Jisoo herself expressed some time ago that she is not sure about the music she wants to make or if she is even ready to go solo or i'm remembering wrong?
That said maybe she has all ready and she wants to do it now who tf knows really, it's just that in this kpop world idols almost never speak directly and we are obliged to follow their agency for every little thing or update..
Normalize idols actually talking