Highlight a term and use the Bing-powered Smart Lookup in Microsoft Office 2016 (Insights) to bring in search results from the Web.
Also, notice the change in the Save icon in the top right.
Microsoft Office also retains versions of previous edits in the History section of the File menu.
The Microsoft Office Blog explains how to share with a click of a button.
Pro Tip: With Microsoft Office 2016, you can share a One Note notebook with anyone you want.