Would you say Android N is a meaningful upgrade over Marshmallow?

This means that we've already had our first crack at the new build, along with a concise rundown of the highlight features and under-the-hood changes. To name a few, multi-window multitasking will be finally part of the core Android experience, and notifications are to receive significant usability improvements through Direct reply and Bundled notifications. Along with an improved Data Saving feature and a special Night Mode, the list is on the heavy side.

Android N Developer Preview timeline

But while improvements and new features in bulk typically means at least some worthwhile additions are coming, we won't go as far as to take that for granted with Android N. We'd rather ask head-on. So, would you say that the proposed changes (so far) with Android N are a meaningful addition to the base established with Android Marshmallow?