Not that I have any involvement with the development at all, but just wanted to make sure that folks know there have been big strides in updating JMRI – the free, open source computer interface to DCC for model trains.
First of all, the manual for version 2.14.1, which was the most recent version before yesterday, has been completed. You can find that newly completed manual at the JMRI site.
Secondly, the folks doing all the hard work have announced that the new version, JMRI version 3.0, is ready for primetime and has been released. You can read the release note, see what has changed, and access the downloadable code on the Release Notes for JMRI 3.0 page on the website.