The alloy:inputDate and alloy:inputTime components currently have an attribute named "responsive" that defaults to true. The VDLDoc provides the following definition:
When true, the component will render an HTML5 <input type="date" /> element on small/mobile displays in order to enable selection of a date with the mobile device's native UI. The default is true.
The UI Engineering department advised that this attribute name contain the word "native" rather than "responsive" because it is more closely associated with progressive enhancement – therefore the name is to be changed to "nativeWhenMobile" in order to be more true to the VDLDoc definition.