Blizzard has released new Patch 12.1 PTR Development Notes, including several bug fixes for Druids, Evokers, Monks, and Hunters, along with an added effect for the Season 2 Holy Paladin tier set.
A new Battle.net Support article indicates that some Battle.net accounts will need to verify their age due to the UK Online Safety Act, in order to prevent restrictions to certain social features.
Blizzard has confirmed that the recent accusation of an employee helping players in a Mythic+ run. The employee has been fired and they are taking action against the complicit players.
On the PTR, the single boss raid lair called Tidebound Grotto, is scheduled to release on August 18th, further increasing speculation that Patch 12.1 releases on August 11th.