Microsoft Office 2016 is available now. It has some nice new features and enhancements. And it is a free upgrade if you have an Office 365 subscription (which you should have because it is a great deal). Still, in the law office setting, much depends on smooth integration between your MS Office apps and other mission-critical software such as practice management and time/billing/accounting programs. In some case, the upgrade to Office 2016 will (at least temporarily until a patch is released) break the link between MS Office apps and your other law office software.
So what do you do if you just bought a new computer or upgraded your old computer to Windows 10 and did a clean install, which means you have to reinstall MS Office? When you log into your Office 365 account, Microsoft will install Office 2016 on your machine by default. That won't work for everyone, particularly if your practice management or time/billing software isn't yet certified to run with Office 2016.
Fortunately, in this great post of How-to Geek, you can find out how to take a step back and install Office 2013 instead of 2016 from your Office 365 subscription. This can be a lifesaver if you want to preserve the all-important links and integration between MS Office and your other law office software.