We have been running version 3.0.2 for a while now on our development and testing servers. Pretty stable with no data losses. For those sites who have been waiting for the development iterations to settle down to a less hectic pace, now is a pretty good time to install.
There have been a lot of minor tweaks to the underlying code and usability improvements for authors.
The above link is for downloading the latest version from Github, but if you just want to try out some cases for yourself, check out:
You will also notice quite a few Greek language cases on there. A nice testament to the regional flexibility of OpenLabyrinth.