Last year a new version of Outlook was launched for OSX which was a great improvement over the 2011 version, and now the rest of the suite will follow – at least in preview. This will make it heaps easier to work against OneDrive, OneDrive for Business and SharePoint as well as an updated client program feel.
Want to jump on the preview? Header over to http://products.office.com/mac/mac-preview and grab the 2.5GB download. Also read the official post at http://blogs.office.com/2015/03/05/office-2016-mac-preview/