I promoted marble to extras-testing earlier today, feel free to test it. This is not a stable version from the version number, but should run pretty smooth already. The final version 1.0 is going to be released around the end of January.

Please see http://marble.garage.maemo.org/testing for further details. Note that if you want to use offline routing you need an additional package, monav-routing-daemon. It is available in extras-devel, but only version 0.2-release-1 works with Marble, while version 0.2-2010-12-10 will not work. The former will probably be promoted to extras-testing in a few days as well.