I was just looking over the upcoming talks in the llvm devroom at FOSDEM, in preparation for Kai Nacke's talk about ldc in a couple hours (you can stream it here: http://streaming.fosdem.org), when I read about RubyMotion, which uses llvm to provide native-compiled ruby apps for OS X and iOS:

http://www.rubymotion.com/features/

It is commercial and partially open source, a model I've suggested for D before:

https://github.com/HipByte/RubyMotion

There are a lot of mobile devs looking for a better programming language in that booming field and D is really missing out by not being on mobile, where its ease of use and efficiency would really shine.  This would be a great opportunity for someone to port D to iOS and provide a similar, partially closed commercial implementation.