Welcome to the board. Did you check on your device? In settings, under device information, you will see a "view" field to click for release notes. I have owned my Kobo Touch for awhile, so I have release notes for 11 builds there. Every time Kobo delivers a firmware release, you will get one of them.
Also, Kobo staff do not have an official role on the MR board. If you want to rag on them, you may have more success on the official Kobo help board at
https://getsatisfaction.com/kobo.