I started a public discussion at http://www.relisoft.com/forums/index.php?showtopic=219 about the merits of D. There is a lot of activity, mostly from D fans, but also some critical thoughts. Feel free to chime in. I'm especially interested in your answers to these:

Do you really believe D could take over C++? Or will it be a good niche language? If so, what's its niche?