New Edition of Form N-400, Application for Naturalization
As part of USCIS’s ongoing forms improvement initiative, effective April 13, 2016 USCIS revised Form N-400. The 9/13/13 version of Form N-400 can still be used until August 9, 2016.
Some of the changes include removing the 2D barcode technology from the form, removing parts that do not apply to certain applicants and providing additional instructions to help applicants identify what evidence they need to submit with the form and bring to the citizenship application interview.
Revised N-400 form can be accessed here: Form N-400