Sounds Like Major Hearthstone News Is Coming Next Week

It looks like Blizzard is gearing up to make a major announcement about Hearthstone: Heroes of Warcraft, teasing a "once-in-a-lifetime event" for next week.

Blizzard is currently sending out invitations to watch a stream on Hearthstone's official Twitch channel on Thursday, July 28, starting at 11 PM PT.

"We would be honored if you would join us for a once-in-a-lifetime event that will be full of magic and celebration," reads a line from the invitation sent to GameSpot. "We also have something very special in store for you."

Viewers can expect an "unforgettable adventure," which sounds like a hint that this event may bring news about Hearthstone's next single-player set.

Hearthstone's latest expansion was Whispers of the Old Gods, which came out earlier this year for the popular card game. The new invitation is signed, "Sincerely, an old friend," though it's not immediately clear what that could be a reference to.

As of the end of April 2016, Hearthstone had 50 million registered players. The free game is no doubt a big hit, but Blizzard has not disclosed how much money the game is bringing in through its various microtransactions.

We'll have all the news from the stream as it's announced. What are you hoping to see from the event? Let us know in the comments below.