Owners of the international Samsung Galaxy S III (S3, GT-i9300) are waking up to a new over-the-air update this morning. This tiny update weighs in at under 1MB, and comes labeled as a "stability improvement" patch. As far as we can tell, the only thing this version changes is the phone's baseband (radio firmware), bumping it up version XXLH1. The rest of the system image, where the remainder of the software is housed, doesn't seem to have been touched at all since the last OTA.
So it looks like this is just a minor OTA to address some issues with the radio firmware, which will be welcome news to S3 owners still experiencing the elusive "cell standby" battery drain issue that's been reported on forums. Though we've yet to receive confirmation that the update fixes this issue, it's the most likely reason for a quick radio update like this. We should also mention that local search is alive and well in this version, after it was restored a few weeks back.
If you're rocking an unlocked international Galaxy S3, you'll probably have already received the notification for this update. If not, head to Settings > About device > Software updates on the phone, or fire up Samsung's Kies desktop software to grab the new OTA. Carrier-branded phones may have a little longer to wait before they get this latest update.