If you have an unlocked international GSM version of the Samsung Galaxy Nexus and are regularly losing signal the fix is out. There is an OTA (over the air) update to your device bringing it to software build IMM761. Many users of the Galaxy Nexus have been reporting connectivity issues and this update resolves that issue.
There isn’t much else that we have had reported, there was also no change in the OS version, radio, or kernel so unless you have an issue with your signal you can just go about your business. If you do get the update please let us know if it actually does fix the signal and anything else you may notice.