Today, Microsoft finally made the Creators Update available for early adopters that want to install it manually. With it comes the rollout of the first cumulative update, which is build 15063.13.
Build 15063.13 RSS
Microsoft released a pair of cumulative updates for Insiders that are on the Release Preview, Slow, and Fast rings, bringing the build numbers to 15063.13 and 15064.14, respectively.