I can answer part of my own question. I see the notes listed once you click on the upgrade button. I was hesitant, since I didn't want it to break it or run into some version compatibility issue and lose playtime. No need to repaste them onto the forums just so people can see them offline. I can access them here just fine.
ISBoxer 41.4.0608.1
* When adding Click Bar/Menu Images it is now possible to select more than one image file at a time
* Quick Setup Wizard updates:
o The Control Styles page now includes a picture of the Standard Menu to hopefully make it a little more obvious
o Fixed a bug with the invisible Key Map option that resulted in '1' being assigned to the Hotkey and Key Combination to send, for all of the 1 through = keys
o Fixed a bug with the Toggles buttons not working for new setups that needed renamed Key Maps to resolve conflicts
On a side note,
When I clicked on the links for ISBoxer 41 --
http://isboxer.com/wiki/ISBoxer_41 and
http://isboxer.com/wiki/HOWTO:Add_a_Game in the notes, I wasn't able to follow the link. They were good URLs though, since I was able to paste them into my browser.