WOTLK on ultrawide screen?

Anyone tried it? Does the game support ultrawide resolutions?
I know latest expansions do, but what about WOTLK?

I did try it on dual screen (3960x1080) and Dalaran was looking fine. I believe it can scale as much as you want as long as your GPU supports it.
However, loading screens and other preset stuff might not look well on unexpected resolutions.