Microsoft's newly released Windows Insider Build 14959 already includes a few features that were announced for the Creators Update in March 2017. Apart from the redesigned 3D Paint app, Microsoft also integrated a better Windows Update-Version called Unified Update Platform.
http://www.notebookcheck.net/New-Microsoft-Windows-10-Insider-Build-brings-3D-Paint-Unified-Updates.182652.0.html