Desi, the deadline to deposit old 500/1000 notes in regular banks has been extended till end Q1/17. Read the circular above. NRIs have a later deadline of end Q2/17 if they get the form above stamped at entry by customs.

​​​​​​​You guys may have other sources of info, but the demonetisation has caused considerable trouble in the sectors that only deal in cash to avoid reporting sales to GST.