Did I miss something?

Snapchat is a great app for chatting with friends and family but my sister has an update that allows you to make the video longer than 10 seconds. However, I didnt seem to have the update (after I updated it to this) and when I looked in the App Store there was no update for Snapchat available.

NikkyNikNikurs about Snapchat, v10.14.1.0