https://www.gamespot.com/articles/hearthstone-witchwood-expansion-releases-this-week/1100-6457984/

Hearthstone's next expansion is inching ever closer. Blizzard has announced that The Witchwood will launch this Thursday, April 12. It will add another 135 new cards to the game, as well as mark the start of the Year of the Raven. The annual change will cycle some older sets out of Standard play to make room for this year's expansions.

The company had been slowly revealing the full set, but that all came to a head this week when Blizzard hosted a live stream with game director Ben Brode and Hearthstone streamer Sean "Day9" Plott to show off the remaining cards. You still have time to pre-order the Witchwood bundle, which grants 70 packs for $50. After the expansion launches, of course, packs will be available at their regular price.