Mainly a lot of once-over the library functions to improve standard conformance. Better accuracy with long double math functions.

http://www.digitalmars.com/download/freecompiler.html

It seems version 8.40 will be a big milestone of DMC++, will it ?

It's almost a powerful c++ compiler from now on, and I'm very expecting the future of DMC++. It's maybe an alternative developing suite on windows platform!