Windows 10 April Update is probably the new name for Spring Creators Update
Windows 10 Spring Creators Update will probably actually be released with a different name: Windows 10 April Update. Users who have installed build 17134 -- believed to be the RTM build -- have spotted a reference to the new name in Microsoft Edge post installation.
This is not the first time this name has been suggested. Less than a week ago a Microsoft video emerged that made reference to Windows 10 April 2018 Update, and the new discovery in Edge would only seem to offer further proof.