Twenty Seventeen ships as the new default theme with WordPress 4.7. This business-oriented theme marks a noteworthy departure from the blog-centric default themes of the past and reflects WordPress’ broader transition from a blogging platform into a platform well-suited to creating all sorts of websites. If you plan to try out Twenty Seventeen you’ll figure something out quickly: this theme is nothing like its predecessors. Past default themes have required only minimal setup and were designed to be functional blog themes right out of the box. This is not the case with Twenty Seventeen.
Source: How to Customize the Free Twenty Seventeen WordPress Theme for Business – WPMU DEV