Step 7: Check App Reviews and Install Updates
If you haven't done this already, now is a great time to update your applications with the latest bug fixes and any support they might offer for Android Marshmallow. This is of course assuming the latest updates have good reviews.
Developers will be rolling out updates in the near future that should help your device and its apps make a smooth transition from whatever you're on to Android 6.0 Marshmallow. Updates typically help apps retain their stability so you'll want to investigate before you install. They could help.