Any insight into what this might be?
If you are one of the more than 95% who run stock, it can't hurt. It's too small to be bloatware. My guess is it's an hboot update and a radio fix (and that's purely speculative). The Official ICS update was v. 3.14.605.12 so this is a tiny increment. The Global leak radio/firmware was 2.22.10.0801r, 12.22.10.0803r, so this radio firmware version number is actually lower. For those of us running S-OFF, custom ROMs and the global leaked firmware, probably nothing of interest here. Certainly not worth RUUing back to stock to "check it out."
What doesn't need to be done lol. Stutter scroll, lag, lock screen from an older sense version, messaging app, app drawer lag/stutter, system settings taking way too long to open from the home screen... I'm sure there are more issues "under the surface", keyboard is awful, can't predict it's or It's.
What's funny is most of that is fixed in the sense 4 (and up) roms. But they won't give us sense 4.