Some owners of the GSM Samsung Galaxy Nexus are finding out that they have a new update waiting for them this morning, albeit a minor one. The latest update for Google's flagship phone leaves the device on Android 4.0.4, but ups the build number to IMM76I, from the older IMM76D. As for what's actually new, some GNex owners are reporting that this fixes the intermittent signal loss issue that'd been affecting some on IMM76D, as well as remedying smaller issues like occasional lock screen lag when using automatic brightness. (Be sure to let us know in the comments if you notice any other changes on your Nexus after applying the update.)
The update should be pushed out to GSM Galaxy Nexus owners over the next few weeks, if earlier release patterns are anything to go by. If you want to manually update (and have the "yakju" variant of the Galaxy Nexus), you can follow our usual instructions to do so, swapping out the old OTA URL for this link right here.