I have added this new cost to the list of EB-5 visa program costs on our website. If you are in the US and apply with the I-485 form for an Adjustment of Status, this fee will not apply to you. For those applying for the EB-5 visa whilst outside the USA, the EB-5 Embassy Interview is part of the process to the EB-5 Green Card. We explain the process on our FAQ page.
This link to the US Embassy in London explains that, as of 1st February 2013, the USCIS will be charging $165 to all those who receive an immigrant visa to the USA. You will be sent instructions about how to pay after completing the interview.