Computerworld - https://www.computerworld.com/article/3269586/office-software/how-to-get-the-office-2019-beta.html#tk.rss_all
Microsoft last week kicked off the preview process for Office 2019, the next in its long line of productivity bundles.
This first effort was aimed at corporate customers, not individuals. And while it wasn’t an invite-only beta, not every organization that runs Office will want to jump into testing.
[ Further reading: First look: Office 2019’s likeliest new features ]
But for those customers who do, here’s how to get hold of the Office 2019 preview.
Check for prerequisites
When Microsoft first began talking about Office 2019, it asserted that Office 2019 would only be supported on Windows 10, but did not categorically