We've recently posted the second beta release of the Enthought Python Distribution (EPD) for our upcoming general release of version 4.0.300 with Python 2.5. You may download the beta from here:
Please feel free to test it out and provide feedback on the EPD Trac instance: https://svn.enthought.com/epd
You can check out the release notes here: http://www.enthought.com/products/epdbetareleasenotes.php
The Enthought Python Distribution (EPD) is a "kitchen-sink-included" distribution of the Python™ Programming Language, including over 60 additional tools and libraries. The EPD bundle includes NumPy, SciPy, IPython, 2D and 3D visualization, database adapters, and a lot of other tools right out of the box.
It is currently available as a single-click installer for Windows XP (x86), Mac OS X (a universal binary for Intel 10.4 and above) and RedHat EL3 (x86 and amd64).
EPD is free for academic use. An annual Subscription and installation support are available for individual commercial use (http://www.enthought.com/products/epddownload.php). An Enterprise Subscription with support for particular deployment environments is also available for commercial purchase (http://www.enthought.com/products/enterprise.php). The Beta versions of EPD are available for indefinite free trial.