There are several ongoing partnerships that are using and continuing the development of OpenBTS in the field.
The TIER research group at UCB is actively working on the OpenBTS project. The goal is to allow for easier programming of applications running concurrently with OpenBTS. This is done by modifying FreeSwitch to better integrate with OpenBTS. UC Berkeley also have a running 10W BTS in the city of Berkeley covering campus and nearby areas. Contact us if you're interested in being a user of the system. The lead developer is Kurtis Heimerl.
Carnegie Mellon Silicon Valley
Carnegie Mellon Silicon Valley is working on an on-campus network using OpenBTS. More information on this project is coming soon, also be sure to see some of their published work!