User blog comment:Adsper/All Possible Mobs/@comment-29543374-20180811195454/@comment-5815431-20180825035855

When the update is posted it will be here. https://minecraft.curseforge.com/projects/fossils-and-archeology-revival

However the update will be 12.0 or 12.1, not 7.3.4. And it has only 5 of the mobs (the ones that start with Mega.) The rest will come later.