I have some interesting facts about this firmware version
here. I'm still updating that list as I work through the patches and config options.
This firmware seems to have a new parental controls option which allows you to pretty much de-koboify the kobo. I'll test it once I'm done the patches. Also, this feature is safe to test (and will revert back to normal after disabled). You need to add ParentalControls=true to [FeatureSettings], then it will be in the Accounts settings. Note that Overdrive and Pocket get hidden, but I may make a patch to either: add back these features or provide individual features from parental controls.