HE-2125 allows function and variable bindings for menu items with which dynamic values can be specified for the user roles, label, icon and preferred order of a menu item. Reference documentation can be found here.
HE-5071 allows a view to be 'submitted' when the user select an option from a select widget. Documentation can be found at the bottom of this article.
HE-2136 allows product owners to edit the translations for a deployed helium app "in real time". Documentation for this feature is can be found here.