[Christian]

In my understanding the icon badge can be updated by some apps that get info pushed from a server. For example, if a news app gets some breaking news pushed from their home server. If you do not have any push then you get no update of the badge unless you open the app. Way around that would be to have a sync server automatically push a notification to OF that a certain item became due. OF in turn would then update the icon badge. That would likely mean, though, that the server would have to constantly analyse all tasks from all users stored on the server in order to find out when something is due. I guess that would be a tough technical challenge.