Some of the changes are especially important if you are developing
extension modules, so I encourage everybody to read the release-notes.
The release-notes page also contains a link where you can download this
release.
Since this is a development release, it is likely to contain bugs.
However I'm confident that this release is less buggy than our
development versions usually have been.
Since this release is a major step towards Achievo 1.0, I'd like to
invite you to test this release and provide any feedback you can.
For the impatient ones who skip the release notes: the most important
change in the upgrade process is that you now have to use the setup.php
script to upgrade older Achievo versions instead of manually applying
upgrade scripts.
DISCLAIMER: There is no guarantee that the upgrade process or even the
application itself is bug free, so I discourage the use of development
releases for production environments.