If you want to work (or try to find some bugs in it to help out) with the latest bleeding-edge Distutils trunk version that will be shipped with Python 2.7 and Python 3.2, you can do it now !

I am creating a nighlty build every day here now : http://nightly.ziade.org/

This distribution can be installed in your existing Python 2.6 installation, and will probably work with 2.5.

I'm not planning to publish standalone versions yet, except nighlty build, at least until 2.7 and 3.2 are starting to be released as alphas.