Microsoft today released a new Windows 10 Mobile build to the Fast ring, bringing the build number to 15063.2. It's a cumulative update to 15063, which was offered eight days ago.
The new update only has a single fix: it enables the ability to update to 15063 from the Anniversary Update. Previously, this took multiple steps.
Of course, a single hop upgrade to the build is important at this point, as 15063 is the RTM build for the Creators Update, meaning it's the one that non-Insiders will see when it's released to the public next month. Of course, Microsoft did confirm that PC users will get it first, with other platforms - such as Windows 10 Mobile - receiving it later.
At the current time, build 15063 is the latest update in the Fast ring for phones, Fast and Slow rings for PCs, and all Insider Preview rings for Xbox One consoles. The SDK Preview and ISO image are both available to download from Microsoft, although they're not yet listed on the official pages.
If your phone is on the Fast ring, you can grab 15063.2 by heading over to Settings -> Update & security -> Phone update -> Check for updates. If not, you can sign up from the Windows Insider Program tab, or you can just wait for the public release, which won't be too far away.