All four are Blizzard's own articles, so everything here is confirmed - including the contradiction in the first section, which is between two Blizzard texts.
Gamepad: complete, or beta?
The development notes of 2 November said gamepad support "has entered a complete functional state". The gamepad guide of 3 November says the opposite in two places: "gamepad support remains in a functional beta" and "Controller support is available in WoW: Forever in a beta state". Not every screen has a button legend yet, and you still need a keyboard to chat; a keyboard-free experience is the "longer-term aim". The guide is the newer text, so that is what we go by. In practice: every XInput controller works, with Xbox or PlayStation icons. It is turned on under Options > Gameplay > Gamepad. Holding LT, RT or both switches between four bars, and three sets of bars give 84 slots. LB and RB target friends and enemies, and the controller light turns red for the Horde and blue for the Alliance.
Discord in guild chat
Discord accounts can be linked under Options > Social. Guild leaders or officers then pick a server and a channel in the guild settings. Messages from Discord appear in /guild or in a separate /discord channel. This works in modern WoW and in Forever.
A purple campfire until December
Watching four hours of eligible Twitch streams between 4 and 12 November (4:30 p.m. PST each) earns the toy Pouch of Violet Dust. It turns a campfire purple and extends all camp benefits by an hour, to two hours, for everyone resting there. It is "ephemeral": usable only during the Launch Celebration event, which "expires in early December", and removed from collections afterwards.
Taldramir
The article "Forging Forever" shows a five-hour video of Wētā Workshop forging "World of Warcraft: Forever's first legendary: Taldramir, the Whispering Wood". It is the first name Blizzard has given a Forever legendary. In an interview the same week it is called a staff. Stats and questline are not named.
What this changes here
Our item on respawns and gamepads said gamepad support was finished; it now carries the guide's "beta state". The camping page does not list event toys and stays as it is.