is D worth learning?

The D programming language... is it worth taking my time off my current projects to learn?

I've actually found one independenet game programmer who uses D -- source code included with this halfpipe shooter called Torus Trooper is written entirely in D.

But will this language ever really take off enough to warrant learning it?  There aren't even any books on it, and that may be a bit of a handicap in really getting mentally "into" it.

Does D support lambda functions?

So many instances I've come across coding in C++ that would have made the code a bit more pleasant-looking where lambda functions would have been appropriate.

I'm very certain it's possible in compiled languages and not just LISP/Python/Ruby type languages.  I think Ada, for example, has support for lambda functions.