Several talks by Osmocom team member were presented at 29C3. Slides and video are available.
Osmocom-BB team member Sylvain Munaut gave a talk at PHDays 2012 about abusing the calypso phones.
It mostly focus on the technical details of the DSP hacking that was done previously to use those phones as passive sniffer and demonstrates some more hacking to turn those phones into BTS.
The talk video is available here and the slides are available here
OsmocomBB team member Andreas Eversberg has been working on a new RSSI monitor firmware application within OsmocomBB.
Using this firmware, it is possible to monitor the RSSI of individual ARFCNs or even the entire spectrum.

Depending on the hardware capabilities (e.g. Hardware/FilterReplacement), it is also possible to measure the uplink RSSI.
More details are available at rssi.bin.
The current status of this firmware is available from the laforge/monitor
branch in git, but is expected to be merged soon into master.
Sylvain Munaut was presenting on Wideband GSM Sniffing at the 27th annual Chaos Communication Congress, where he was using a series of four phones running OsmocomBB as a GSM packet sniffer.
The slides are available from http://events.ccc.de/congress/2010/Fahrplan/events/4208.en.html.
A preliminary video recording (simple dump of the stream) can be found at from this mirror
Please note: This talk was using a lot of custom software that has not been released and is not part of OsmocomBB. For more details, read this mailing list post by Sylvain Munaut
At the 27th Chaos Communication Congress, Harald Welte and Steve Markgraf have presented on OsmocomBB.
You can find the slides linked from http://events.ccc.de/congress/2010/Fahrplan/events/3952.en.html and a preliminary video recording at this mirror
The official (cut) version of the video will be released at some later point in time.
This is not a real blog, just a RSS feed for updates
Like in the OpenBSC case, this OsmocomBB blog is merely intended as a news feed.