A new version of Opera was announced on November 2. Version 33.0.1990.58 is mostly about fixing a few user interface and stability (i.e crashing) issues. The change log has all the details.

Oddly, the version of Opera running on the computer I’m using right now is 33.0.1990.43. I have no record at all of that version, and there’s no mention of it on the version 33 change log page.