It is indeed a difficult question to answer! The "Agile" Balanced Scorecard may or may not exist today (the literature published is pretty scant on this), but if you are looking for developing this scorecard or modifying your existing Balanced Scorecard for your organization, then you may want to watch my video below in the Agile India Kerala 2013 conference titled - Balanced Scorecard for the Agile Enterprise
Watch the Video here
Watch the Video here