Oceniono na 4 z 5 możliwych gwiazdek

Improves Thunderbird immeasurably!

A new version was just downloaded, however, and I don't see any information anywhere about what has changed. Am I missing it?

Ta opinia jest o wcześniejszej wersji dodatku (2.6). 

Hi, see https://addons.mozilla.org/en-US/thunderbird/addon/gmail-conversation-view/ near the bottom there is a section "version information"