I’ve uploaded DragonFly 4.0.6 ISO and .img files. (Does that capitalization make sense?) They should be available at your nearest mirror, or will be shortly. I am still working on the 4.2 release candidate images.
A running description of activity related to DragonFly BSD.
Here’s the changelog -> http://lists.dragonflybsd.org/pipermail/commits/2015-June/418759.html