No, because it isn't launch content and neither was Thal'Dranath. We didn't have any info on Thal'Dranath either so your made up 75 days before game launches timescale is completely pointless and irrelevant to say. We didn't have any substantial info on Tanaan and we didn't on the Timeless Isle and we didn't on the Isle of Quel'thalas either before their respective expansion launches for some more context. Use your brain or at least try to.
Must be miserable being so negative all the time and having to forcefully pull shit out your ass to throw onto this forum for no reason.