The screenshots, first posted on PCportal.org.ru, would seem to indicate Microsoft will offer some small but still nice customization options for the returning Start menu in Threshold, which may or may not be called Windows 9 when it is released.. Keep in mind that even if these images are accurate, Microsoft could still remove this feature before the final version of Threshold goes live.
In addition, long time Microsoft watcher Paul Thurrott has a few more new tidbits about Threshold in a new article, based on what looks like first hand knowledge of an early build. One interesting thing he notes is a new Share button that he says is found on the Share tab in File Explorer. He states this is similar to the button found on Windows Phone, and will let users share some items with certain Modern apps.