Nothing to be alarmed about -- I just discovered that, despite releasing v2.226 in June, I had never made the update "official" according to the update checker -- so people weren't informed about it. That sometimes happens when I release a minor update and I'm not sure if I'm going to release another one soon after.
So all I did yesterday was tell the updater about v2.226, so people who had not gotten it between June and December would be alerted about it.