I am happy to announce the latest release of MATSim ("Spring 2011"). This release is mostly a maintenance release: Several things got faster (e.g. public transport router), use less memory (e.g. large networks) or just have fewer bugs. In addition, it includes support for a newer population-file format and some configuration changes.
The newer population file format ("population_v5.dtd") is now available, but not yet used by default when writing population files. This change will likely happen in the next release.
The most notable configuration changes are:
More detailed information about the changes can be found in the release notes accompanying the release.