
Just a few hours ago, Blizzard community manager Aratil posted that the final round of invites to the Hearthstone beta is under way.
According to Aratil, most Battle.net accounts that have opted in for the Hearthstone beta before January 7th and don't have a Hearthstone key yet have been flagged for access. Those who had opted in are thus encouraged to keep an eye on their inboxes and Battle.net accounts - an invite should be coming in the following days.
"The majority of the final round of invites to the Hearthstone closed beta test have now been completed - We have now directly flagged most Battle.net accounts that have met both of the following criteria:
The account was opted into the Hearthstone beta test before January 7th.
The account does not have a Hearthstone license already attached to it as of January 7th.
If your account was successfully flagged for beta access, your account was also sent an email with instructions on how to download and install the game. If you cannot find this email for any reason, please go to your Battle.net Account Management page - The Hearthstone license should be visible under “Summary” - “Your Game Accounts” if your account was flagged for beta access. If your account has not yet been flagged for the beta test, we are still going through all of the accounts and we will provide another update at a later time.
The Battle.net desktop app is required in order to play Hearthstone, so make sure to install the Battle.net desktop app first."
There's still no word from Blizzard about when the open beta will arrive.
Source: Battle.net