Open the Adobe Creative Cloud app and it will check if you need any updates. The icon that says Open will change to Update. Same goes for PS CC 2015.
The creative cloud app isn't always correct. The best way to check is going to Help->About.. And look at the version number. You should have CC 2015.1, and compatibility with Camera Raw 9.1. If that isn't what you have then you will probably have to sign out from the creative cloud app and sign back in and see if you have Lightroom updates available.