Advance tax due dates for individuals

Dear friends,

I found in a website that w.e.from AY 2013-14 (PY 2012-13), Individual assessees having business income whose estimated tax liability exceeds Rs. 10,000/- for the AY 2013-14 has to deposit advance tax @ 15% on or before 15th June 2012. But there is no mention about the rule/circular/notification number.

If anybody knows about it, please share..

Thanks in advance..

vinodaca74 @ gmail.com