Dawn of the Infinite is a megadungeon coming in Patch 10.1.5. With the first PTR build, we have the complete list of boss names and abilities from the encounter journal.
Dawn of the Infinite Boss NamesThere are eight encounters in Dawn of the Infinite exploring different timeways, including evil Chrome, an Infinite version of Tyr, and a faction-specific encounter where the Horde fights Anduin Lothar and the Alliance fights Garrosh Hellscream.
Chronikar Manifested Timeways Blight of Galakrond Iridikron the Stonescaled Tyr, the Infinite Keeper Morchie Time-Lost Battlefield (Alliance) and Time-Lost Battlefield (Horde) Chrono-Lord Deios and the Infinite Dragonflight Dawn of the Infinite Encounter JournalThe Bronze Temple has lain dormant for millennia, awaiting a time when its dragonflight would return. But just as the bronze dragons have reclaimed their sacred temple, dark forces now threaten to overtake it. Will the infinites take hold of the Timeways and bring about the rise of Murozond? The champions of Azeroth must venture into time itself to ensure that the future remains a bright one.
ChronikarChronikar spent her entire life in service to the infinite dragonflight, making her way up the ranks until she earned the title of commander. Even among the radical infinites, her zealotry is unmatched. As the venerated rearguard, she will stop at nothing to put an end to any who dare oppose her order.
Overview: Chronikar stomps to form [Withering Sandpools] that deny ground and leaps at players with [Eon Shatter] to unleash fragments of timespace. Periodically, she uses her time-bending axe to strike with [Lifespan Shear]. Read more on wowhead.com