The Office browser extension now includes proofing of your content*

The Office browser extension now includes proofing of your content*. 
It connects to a Microsoft online service that offers spelling, grammar 
and refinements suggestions for your writing on most websites and is 
available in more than 80 languages.

*This feature may not be available for all users.

I leave my pc for a couple hours or so and I come back to find this

I thought, well cool and I then press the gear to check out the settings for this new feature and I get this

Well now, that is very interesting I thought. So I try to go about it a different way.  I click the office icon on the tool bar, 

And then the gear and again, I get this;

So now I'm curious if anyone else has had this feature turned on for them as I do believe it to be another rollout as it is stated above " *This feature may not be available for all users."

I happen to also glance at my browsing history and I find this bit of interesting info... 

A Chrome extension????  

Was this something done elsewhere and slipped by the team or is this intentional?  Are Chrome extensions being added to the edge store and not being labeled as actually coming from the chrome.webstore and not from the edge addon store?

Dennis5mile