The new notes will have the year of printing, 2017, will be on the reverse of the note. The first three alpha-numeric characters (prefix) will remain constant in size.

The Reserve Bank (RBI) will soon issue ₹10 denomination notes with enhanced security features for circulation.
On March 9, the RBI said the banknotes in the Mahatma Gandhi series-2005 are to carry inset letter 'L' on both number panels, bearing the signature of Governor Urjit Patel. The year of printing, 2017, will be on the reverse of the note. Among other features, numerals on both the panels will be in ascending size from left to right.
The first three alpha-numeric characters (prefix) will remain constant in size. "All the banknotes in the denomination of ₹10 issued by the Bank in the past will continue to be legal tender," the central bank said in a notification.
Earlier due to demonetisation Rs 500 and Rs 1000 notes were deregularised and in its place new Rs 500 and Rs 2000 notes were brought in. Then also there were talks of security features in these new notes, however they have created more of a confusion than clarity.
