A few days ago, Microsoft announced that anybody could download their Office 2016 preview. Until today, only developers and IT professionals could try it out. Only download the Office 2016 preview if you are willing to tough out problems and are okay with buggy software. The new preview worked pretty well, I did not have any problems with it, though. The preview is still code that is being worked on.
If you are just a curious Office Home user you can download the 32-bit or 64-bit Office 2016 preview here: https://products.office.com/en-us/office-2016-preview. But, if you are an Office 365 subscriber you will need to follow the directions on the page above to download the Office 2016 preview.