I upgraded to the new version, but the only noticeable difference was the banner ad taking up space at the top of the screen.
I used the link to successfully roll back to version 1.1.5. So far there haven't been any prompts to upgrade.
BTW, I went to the Handmark web site to see if I could get some information about the update, but the Instinct isn't even listed as one of the supported devices. I don't think it's unreasonable to be told what the update will do for me BEFORE I decide whether or not I do it.