The recently released Windows 10 Build 15063 is the RTM build of Windows 10 Creators Update version 1703. If you need to download an MUI language pack for this build to install it later or offline, here is a set of direct download links to MUI Language Packs for Windows 10 Creators Update.
Downloading MUI language packs is useful for users who need to install them on multiple PCs. They will save their Internet bandwidth and time by not downloading them again on each PC. Instead, they can save the offline package and use it for future installs. Tip: see how to install a MUI language CAB file in Windows 10.
Download MUI for Windows 10 Creators Update (Language Packs for Build 15063)