Why announce this? Tyrande has been moved to the Free section after Galakrond’s Awakening was released and never been announced about being removed or something ever since. Even when she was first announced during Winter Veil 2019, they didn’t even leave a deadline, which made me think she is intended to be free forever (unless Blizzard announces something again). Only whoever claimed Tyrande cannot see her in Shop.

I have an alternate account which never claimed Tyrande and I can confirm this. From Galakrond’s Awakening, Ashes of Outland to Scholomance Academy, she just sits there and automatically disappears once she is claimed.

Stonekeep, about the rarity distribution (common / rare / epic / legendary) in Ashes of Outlands, Chadd has confirmed that Demon Hunter will get 6 / 5 / 2 / 2, all 9 old classes will still be 3 / 3 / 2 / 2, Neutral will be 19 / 3 / 3 / 5. You can find his comment on the pinned Reddit post.

Sorry for extremely late response. The file is located at Hearthstone (where you install the game on PC)\Strings\enUS\. It’s very very long, but new dialogues or conversations are always added at the end, so keep scrolling to the bottom. Each dialogue has their own ID (I think you can guess the pattern). Galakrond’s Awakening dialogue IDs start with VO_DRGA_BOSS_. Find the one with “RenoDragon”, you will see.

SPOILER ALERT

You should check the conversations hidden in the file MISSION_AUDIO.txt. Also, there is another card related to this: Draconic Potential.

Based on the data’s naming, I can say that we are going to get this awesome scene in the final boss of Explorers campaign, which is Reno VS Rafaam and Galakrond.

Alexstrasza also acknowledged his origin and will tell Elise after defeating Hagatha in Chapter 2 of Explorers campaign.

Overall, if you are a fan of the story since the Year of the Dragon, you will 100% want to buy it. I’m sure you won’t regret. There are indeed many more special interactions, some exclusively are based on fans’ memes, such as that four mana 7/7

I think we can see both two card backs for winning on Normal and Heroic difficulty according to this link:
https://blizzard.gamespress.com/Hearthstone#?tab=screenshots