The new version of Microsoft Office 2016 is in the final stages of development. 
The beta version is available for download. This means that you can run Office free on your computer as part of the software testing program. Once the product is released, the license will expire.
Here’s the link to download Office 2016 Professional Technical Preview free on your computer.
Link: https://products.office.com/en-gb/office-2016-preview?WT.z_clid=O16_Home
While using this product you may occasionally be asked to submit feedback by quickly ticking a box and hitting submit.