I say "focused" but the only thing I said about Dart was that I don't like it and I don't see anything good about it. The next SydJS is going to have someone from Google talking about Dart. Interesting.
Another question was if there were any domain-specific languages. Kind-of. There are languages that are ports of others, languages that target callback hell and languages that target security. I don't know of any with limited business domains.
I've posted the presentation slides online. Sadly, they will only work in WebKit browsers (e.g. Chrome, Safari and Epiphany).