Holo was supposed to be the unified Android design for all time, and it barely lasted two years. Even after the &quot;Material&quot; thing, Google has inconsistently applied it&#x27;s supposed golden standard, and some Material elements, like the FAB, have actually been REMOVED from Google Keep in favor of the more Holo-esque bottom action bar, for example.<p>Material Design will probably be suddenly replaced by something with an equally trendy name when Google needs more PR.