Nice, will be installing Win10 on my tablet this evening. Woot.
PS Can anyone explain, why do we even need the ISO creation tool? Why can't Microsoft just put ISO image to download?
Because now they don't have to update and maintain a list of links, they update the binaries on the back end and anyone using the tool automagically gets the latest version instead of googling through a dozen broken, outdated direct download links. Also the tool is not just an ISO downloader, it can format and create a proper bootable USB stick as install media so you don't have to use something like Rufus to create one out of an ISO.