https://www.gamespot.com/articles/hearthstone-taverns-of-time-event-adds-special-are/1100-6459419/

An upcoming Hearthstone event will bring limited-time cards along with a few other goodies. The centerpiece is the "Taverns of Time" event, which adds 28 powerful new cards to Arena mode for the duration of the event. Taverns of Time will kick off on June 11 and last through July 3. The first Arena run during the event will be free. While the event lasts, special daily quests will reward both gold and arcane dust.

Starting today, a new "Get In Here" pack bundle is being offered. It consists of two packs each from the Classic, Witchwood, Kobolds & Catacombs, Knights of the Frozen Throne, and Journey to Un'Goro sets, for $7.99. That bundle will be available until June 19. Blizzard will also be holding free pack day on June 13. Logging in anytime that day will get you a free Golden pack, with five golden cards.