Kh-31A is there, so no.YJ-15 seems to be a smaller YJ-12 without sacrificing speed or range. J-15 carried means carrier wing has a supersonic anti-ship missile. This is the world's first carrier borne supersonic AShM. Air launched brahmos only comes off Su-30MKI which is not a carrier capable aircraft.
First heavy carrierborne ASCM - ahead of Brahmos-MA - now that's without doubt.
I wonder how many J-15 can take. Minimum 2, potentially up to 5?
Unless it's a design intention (like kinzhal), I think no one tests supersonic weapon separation for stand off a2g stores...minimum added value for a lot of work.YJ-12 comes off a H-6 and I'd imagine a J-15 can potentially give the YJ-15 more initial energy compared to H-6 for air launched YJ-12.