There is a word in urdu for this, 'sasti shohrat' or 'cheap publicity', pathetic idiots who can't pass legislation wanted to feature in indian newspapers, so did this. Nothing more than this, Finance Ministry already replacing Rs. 50, 100, 500, 1000 into smaller size for an year now, which deadline has just passed.
Request forum ppl only to take it seriously when they 'pass a bill', Iftikhar Chaudhry Supreme court was better in these 'dramas' called notice suo moto action in the end nada, nothing, got media publicity during it and later windup the drama quietly.