During our preparation of a paper about Leo, a number of improvements were made to the system. See the changes for more information on specifics.
The release is nicknamed "LREC" because the paper will appear in the proceedings of the Language Resources and Evaluation Conference. The paper is available from the Leo website at:
The first release for Leo is available, and the homepage is updated with some better documentation. It is still minimal, but that should get the ball rolling!