Blizzard announced via Wowhead that the WoW Classic development team is going to Reddit to answer your questions.
The AMA is set to take place at 10a PDT on August 20.

"Greetings and well met!

On Tuesday August 20, 2019 10:00 AM, the WoW Classic development team will be on http://reddit.com/r/classicwow answering your questions.

Our thanks goes out to the r/classicwow admins, and to everyone who participates.

We'll see you on August 20, 2019 10:00 AM !"

In case you missed it, it was announced WoW Classic received a new PvP realm earlier.

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