Power BI Desktop: 2.65.5313.701 64-bit (December 2018)
/ Options / Preview Features
The checkbox item 'Modeling View'
The 'learn more' link goes to https://powerbi.microsoft.com/en-us/ , rather than a page that explains what Modeling View is.
In addition, the M Intellisense link seems to go to a community post, so they might all need checking.