As far as i know there are people who are using Windowblinds with no problems on Windows 10 and there are others who are having issues. Stardock won't update Windowblinds until Windows 10 is officially released because there is no point until then. Only then will Windowblinds support win 10. But Stardock will for sure issue notice as to when a Windows 10 compatible version will be available. 
