Redditor crimson4649 shared with other community members that Microsoft allegedly leaked the Diablo II: Resurrected Beta will start on Tuesday, August 17.
Microsoft seems to have updated the page, removing the date. If this actually happened, this might mean that Blizzard Entertainment might announce Beta next week via a developer blog. Possibly by Thursday, August 12. This is just speculation at this point as there is no WayBackMachine or Google Cached page to confirm this redditor’s word.
The Microsoft Xbox page where this was found is at this address. Access to this beta requires a Xbox Live Gold subscription — as per the image below. Thanks, MrMesli.