Was forced the update this morning... I still don't understand why these updates are not an option. I would rather wait a few weeks and see how others fair with it, especially after the nightmare of 5.0.1 on the G3. So far Marshmallow seems great, a few changes jump out at me right away, smaller notification tray and I think better battery, but time will tell for sure. Just wanted to share my positive experience so far. Has anyone else had a smooth installation? What are some of the major changes with Marshmallow??