All new Microsoft Office 2016 is now available for download and evaluation. The prevew installation requires internet connectivity however it downloads the product pretty fast.
Please be aware, this is only a preview version. If you have many add-ins works with application such as outlook, be aware that you would only have one outlook instance (app) running at a given time.
The installation does not give any flexibility in selecting applications (custom installation option), rather it proceeded with the full installation mode. It took close to 20 minutes to complete the installation.
The overall look has changes bit and few functionality have been testes in outlook such as attachment history, theme etc.
Read more here - Office 2016 Public Preview now available
The uninstallation process do not show any progress bar, so the only way is to wait until the uninstallation process to complete. Enjoy and be ready to get your hands dirty with a list of new Microsoft products lined up for release in few months from now such as Exchange Server, Sharepoint etc.