Here’s a card list of the cards that have been spoilered so far. Some of the quality isn’t great because they are scans or pictures from phones.
Abomination, Acolyte of Pain, Alarm-O-Bot, Alexstraza, Ancestral Healing
Ancestral Spirit, Ancient Brewmaster, Ancient of Lore, Ancient Watcher, Arathi Weaponsmith
Arcane Explosion, Arcane Golem, Arcane Intellect, Arcanite Reaper
Archmage Antonidas, Argent Squire