Last month Apple released a support article about installing Windows 10 Creators Update on a Mac:
First-time installations of Windows 10 Creators Update are not currently compatible with Boot Camp Assistant on macOS. Apple and Microsoft are working to resolve this issue. In the meantime, users wishing to use Windows 10 Creators Update on a Mac can first install Windows 10 Anniversary Update using Boot Camp Assistant. Then update to Windows 10 Creators Update from within Windows running on your Mac.
The notice came a week before the Creators Update was released on April 11, 2017. Apple advises not to do a fresh install of the Windows 10 Creators Update but to install the Windows 10 Anniversary Update and do an in-place upgrade for the Creators Update. Installing the Creators Update as a new install will result in a blue screen on startup and will require deleting the Boot Camp partition and starting over using an earlier Windows 10 version installer:
If you already attempted a new installation of Windows 10 Creators Update using Boot Camp, and you see a blue screen, use these steps to remove the Windows partition and restore the disk to a single volume.
It remains to be seen if Microsoft will release a fix to allow new Boot Camp installation of the Windows 10 Creators Update. In the meantime, if you plan to upgrade your existing Windows 10 Boot Camp system to the Creators Update, we encourage you to make a Winclone image backup first!More about Winclone for Mac and saving a Boot Camp backup.