validity of extension in date of income tax return

[amerrafique]

in circular # 10 dt 26-08-2011 ref. C.No.2(2)Tax Base/2010 it has been said that "In exercise of powers conferred under section 214A of the Income Tax Ordinance 2011, FBR is pleased to extend the due dates of filing of income tax returns for the Tax Year
2011"
so my question is " does an extention granted under section 214A of ITO 2011 is valid? or does it is granted with a lawful authority?"
Members please comment.
http//n.fbr.gov.pk/Docs/201182611830238512011circular10.pdf.pdf dated 26-08-2011