Enter needs a new architecture in order to fully support PAM and proper privilege separation. Therefore there hasn't been any active development in the main trunk, instead a large scale refactoring of the whole software has been underway. Roughly 1/4th is complete at this stage.
The immediate benefits will be internationalization, code documented with Doxygen, testcases and a better architecture.
This will later make the implementation of privilege separation and PAM a lot smoother.
The new release, when it arrives, will of course sport a new theme as well!