This is the 0.5.0 release.
This release includes way too many changes for them to be listed here (over 2500 of them since the previous release), but one of the major improvements is the rewrite of the navigation engine, and a new renderer, based upon Cairo instead of GDK with nice features like anti-aliasing and some new translations.
Please report issues at http://trac.navit-project.org
The documentation can be found at http://wiki.navit-project.org