I have set up an early testing version of my map drawing software. It can be found at
http://magnusmanske.de/wikimaps
Note: You'll see SVGs directly. So, you'll need a browser that natively supports SVG (Konqueror, some Mozilla builds) or a plugin.
The site is basically a 1.4 MediaWiki with an extension called "geomap". You can see the invokation in the source of the main page.
The actual map rendering extension is running on its own, using the MediaWiki database as data source. It outputs SVG, which is embedded as an object in the actual wiki page output.
I will add my demo data of the rest of Germany tonight, so there's more to see than Bavaria...
Please note that the SVG is actually generated in *real-time*, on *each view*. Of course, in its final form, it would cache the SVG, and also offer rendered PNGs. I'm not quite there yet, as ImageMagick tends to die on SVG-to-PNG conversion :-(
Please visit the demo site, have a look, tweak some stuff (add a city, resize Bavaria;-) and tell me if (and how) we should make this a "real" Wikimedia project.
Magnus