MicrosoftRegarding the editing languages, any form of English will meet the criteria to enable the data types, so either Canadian English or US English is fine. The feature right now is still limited to Office Insiders, but we're hoping to make the feature generally available in the very near future. Regarding build numbers and updates - this can actually be a bit confusing these days. It's not always possible for us to verify whether you should see a feature or not based purely on a build number, since we have the ability to selectively enable features for an arbitrary percentage of our users in order to run experiments (e.g. if we turn on the feature for 50% of our users, do they start crashing more?).
This also means that users will occasionally see new features appear without having to install a new build, since we can turn on features as soon as they're ready for you. Right now, the only way to guarantee that you'll see this feature immediately is to become an Office Insider. If you'd prefer to stay in your current ring, that's great too, and I expect that the feature will be generally available to all users in the near future.
Thanks again,
James
