If you needed any further confirmation to this fact, Windows 10 Build 15063 is now available through Microsoft’s official Windows 10 Update Assistant tool. The Update Assistant, which is available for direct download, will automatically update your Windows 10 installation to the latest release of Windows 10, and it clearly points to Build 15063 as the latest and greatest from Microsoft. This is perhaps the best way for customers that haven’t signed up for the Windows Insider program to get the Creators Update before everyone else.
As for Windows Insiders, chances are that you are already running the Build 15063 since it was pushed out to both the Fast and Slow rings last week. If you are a Windows Insider who for some reason hasn’t received the RTM build yet, you can grab it through Windows Update. Alternatively, you can download the 32-bit and 64-bit ISOs directly from Microsoft:
Microsoft hasn’t yet given an official date for the public release of the Windows 10 Creators Update, but all signs are pointing to April 11th.