https://www.reuters.com/article/us-mexico-archaeology-aztecs-exclusive/exclusive-aztec-war-sacrifices-found-in-mexico-may-point-to-elusive-royal-tomb-idUSKCN1R60ER
One can see why they are getting excited, although publication of the results seems a little bit delayed if the following is true:
"Discovered off the steps of the Aztec's holiest temple during the reign of the empire's most powerful ruler, the sacrificial offerings also include ..."