Aqua Archivist is an absolutely insane card for any elemental deck. Could even be used in an arcane burn mage to set up a Vellaxus turn, because it carries over.
Unchained Gladiator is also easy draw for a deck that is given many cheap elementals, especially with Synchronize.
Chillomatic is a mech, it will go into mech mage.
All that said, weve already seen that mage is getting the multiple spell type archetype and Im assuming the rest of the new cards will be focused on those.
EDIT: And apparently they were revealed an hour early and they are multiple spell school support