If You're Not Running Stock, Proceed With Caution
If you aren't running stock Android software, proceed to the Nexus Android 6.0 Marshmallow release date with caution.
Before you install the Marshmallow update, you'll want to head to XDA-Developers or to a specific domain for your custom software (Cyanogenmod forums, for example) to ensure that everything is working properly and to seek assistance if necessary.
This article may contain affiliate links. Click here for more details.