This is according to a post by a Blizzard Community Manager in the Hearthstone forums. “Just wanted to give everyone a head’s up that we are currently targeting to release Curse of Naxxramas during the month of July. Unfortunately, we still have a lot of implementing and bug fixing to get through, so please stay tuned! With that said, we are also targeting to reveal pricing details regarding Curse of Naxxramas next week on July 1st, so please keep an eye out for that.”
Blizzard did not mention when exactly in July we can expect the expansion, so we guess we’ll just have to keep our eyes peeled for it. Naturally there will be new features introduced in the expansion, like a single-player component which was revealed during PAX East a couple of months ago.
There will also be new cards that Blizzard will introduce to the game and a dungeon, which is similar to Hearthstone’s Arena mode. It will cost players to enter the dungeon which has five wings. If players are able to defeat each wing, they will win themselves a new legendary card. The first part of the expansion will be free to play, like the game itself, but anything after that will cost gamers either in-game gold or real-world cash.