CSULB Supplemental Application question

Hello, I applied 2016 CSULB fall term with mechanical engineering. I recently checked applicant status, and
they said on January, they will let me do on-line supplemental application. Do they asked me to do supplemental application because I am admitted? or they will decide after they receive supplemental application?
Can anyone tell me what supplemental application is?
Thank you

hi, the supplemental application is to update your grades from fall 2015 and other things. you need to complete this by feb 1, 2016 in order for them to review your entire application.