When I saw this at the American Cinematheque in Los Angeles, Wim Wenders said Warner Bros. was not allowing the home video release of the director's cut in the United States, but it would be available in other regions. Any news on this? I've been dying to see it again, it may be long, but it's packed with ideas.

The only version of this that I am aware of is the Japanese ld.

Is this available on DVD anywhere? I've got the US version of the LD and would love to get this in DVD.

The Japanese LD is the director's cut? Is it NTSC?

The Japanese version is NTSC. When you say director's cut, it can mean at least 2 versions. There is the extended version of the movie which is on the Japanese laserdisc. There is also a 5 hour version of which is not available anywhere AFAIK. You can see this link talking about the different versions:
http://www.panix.com/~archii/uteotw/versions.html

If you are interested in the movie, I can dig around. I bought it about 6 months ago online, but I cannot remeber where.

I was actually referring to the 5 hour version, I didn't know there was an in-between version. I hope someone goes and releases it in another region on DVD, as Wenders indicated it was a possibility. Thank you for your help!