Microsoft on Thursday released a public preview beta of the programs that make up the forthcoming Office 2016 for Mac. The new versions, which inherit many of the features from the last Windows release, offer a Yosemite-inspired look that support Retina displays, full-screen mode, and other modern Mac and OS X features. The preview versions are completely free to download and use, but are intended to give customers a sneak peek and to gather feedback from users ahead of the final release.