I really would have thought Zenimax Online, knowing the annoucment would have bothered to make their own forum for it off the bat.

They aren't just working on the forum though, but the whole website for it. And it will probably have some connection between the forum account and the game account, just like on most other MMO forums like TOR, but that's just my speculation.
In the not-too-distant future, we’ll be launching a fully featured community site – complete with its own forums. Once the site’s ready, we’ll let you know where to go.
They dont want to talk to potential customers. Dont even have the time and energy to make forums for the game, The developers havcent even talked to the press or the gaming community. Great start
Talking to the press is usually up to the PR people, not the developers.