some days ago, I was a little bored and set up automatic building of the SVN version on nightly.geany.org.
So far, the latest SVN version is built for Windows (cross-compiled) and for Debian Lenny (should still also work with Debian Testing/Unstable).
The builds are created automatically every night (UTC) on a Debian Lenny system, so there is no guarantee that they work but they should :).
The Windows build can be found in a ZIP archive on http://nightly.geany.org/win32/ together with some usage instructions. As a little bonus, this ZIP archive contains also all plugins from the Geany-Plugins project which can be built on Windows.
The Debian .debs can be found on http://nightly.geany.org/debian/. The package is based on the officially Geany package in Debian by Damián. http://nightly.geany.org/debian/ can also be used as a source for the APT package management, usage instructions are available on the site.
P.S.: neither the Windows executables nor the Debian package are signed unlike the releases since they are created automatically on the server. Just for your information.