This item is reported: Blizzard developers said it, but in an interview on a creator's channel, not in an announcement of Blizzard's own. The quotes come from the video's automatic subtitles, which name no speakers, so we attribute them to the interview rather than to one person except where the speaker identifies himself.
Shaman and druid
The shaman criticism is "legitimate" in part, Zierhut says, and in part players are "mad that they can't have improved Ghost Wolf". Enhancement leans "a little bit too much" towards spell power gear - "We don't want enhancement Shamans running around in cloth robes" - which matches the tuning announced for 10 November. For Elemental he made the late change himself: players disliked Lava Burst and asked for a powerful Chain Lightning, "but I think it still could have used a little more cook". He would not be surprised if Blizzard revisits shaman talents "early next year", in a patch and not sooner, and he is looking at druid talents too. This is the first answer from Blizzard to the protest of the Shaman Classic Discord.
Raids
The first tier set is split across all three raids: "If you want to finish your set, you're going to have to go to all three." Item level is about the same in the 10- and 20-player raids; the size changes "how hard it is for the raid leader", not the fights. Hyjal Summit opens three wings after its first boss, and all three must be cleared before the last part. Barrow Deeps has three entrances - Winterspring, Hyjal and one of the dungeons - each leading to a different section. Most raid buffs last an hour, and with Salvation gone the first paladin in a raid is "really really good", the second "nice to have".
Roadmap and economy
Blizzard plans "two big content updates each about 4 months out from each other", each with a 10- and a 20-player raid; 40-player raids will not be in every update. Molten Core, Blackwing Lair and the other old raids will come back "in a meaningful way". And the auction house deposit minimum goes back from one silver to one copper: "That's coming. Not yet, but coming."
Launch
The longest queue was "around 5 minutes if that". Blizzard had been "a little too aggressive" about overcrowding and was adding players to each copy of a zone. Weather that affects gameplay was cut and set aside "for the future".
What this changes here
Nothing on the topic pages yet; none of this is in a Blizzard article. The Barrow Deeps page already lists three entrances.