My status still says "Application Under Review". I requested and was granted an extension and sent my application on dec 20th (2 days after the original deadline). I only got the "Application Acknowledgement" email on jan 21st, so I'm a bit worried about not getting a response (also, considering I had to pay the additional late fee).
I submitted my application on 23 Dec 2014 and received an email indicating that my application was complete on 21 Jan 2015. Got my admission decision today despite the late application. I am sure the committee will get around reviewing your file. All the best!