While Brode won't reveal any new Knights of the Frozen Throne cards until July 24th, Brode is more than happy to give updates about some of the more technical questions users might have about Blizzard's competitive, online card game.
One user asked Brode about the upcoming ladder rework for competitive matchmaking, such as what Blizzard wants to fix, what challenges exist, and when the update could be announced. To which, Brode responds by detailing planned ladder changes which would "Reduce grind for top-level players... Increase progression for players stuck at rank 20-ish... Get better matchmaking for bottom 25 [percent of] players... Make the experience better for new players."
As for the challenges, Brode explains that the Hearthstone team wants to strike a balance with the new update and keep the things they like in the current system, namely how "SUPER clear" the system is about what players need to do to rank up. He also says that there is a design ready for testing, so perhaps players will see the ladder redesign "later this year."
Among other nuggets of information includes spectator modes (Brode says there is "room for improvement"), Hearthstone memes (Brode is currently working on a video that reviews memes), and other technical changes made to the game's deck management systems, and gameplay updates.
The AMA has been up for a little over an hour by now, so be sure to check in for a chance to ask about Hearthstone from the director himself.