I made a release of BergDB today. bergdb-2014.1.zip can be downloaded from bergdb.com.
The release is focused on stability, clean code, and an improved API. The software is getting stable. There are no known issues and 650 units tests that say it works (85 per cent code coverage). The API is getter more stable between releases and the binary database file format is not changing much.
So, in my opinion, it is now production ready for many types of development projects.