Hello,
eleven years ago, the first piece of code of the project was committed. Last year we organized a public event, for the 10 years celebration, presentations and more details about it at: * http://sip-router.org/10-years-ser/
For the 11th year, I made a news with the summary of the past year - definitively it was lot of work, adding many new features: * http://www.kamailio.org/w/2012/09/kamailio-at-11-years/
Looking forward to the next year celebration, surely it will list another great set of new features!
Many thanks to everyone helping the project, from advocating to development!
Cheers, Daniel