A new build of Windows 10 has leaked. This time around it is build 10051 but as we have already seen with the release notes, there is not much to get excited about here.
The latest official release from Microsoft was build 10049, so this leak is only two builds newer than what you are likely running if you are reading this post. If you want to know what's new, you can checkout the official change log here.
Despite the change log, it does look like there are new mail and calendar apps in this release.
The last build to leak was 10036 about three weeks ago. As with any leaked build, we do not recommend installing it as it is not supported by Microsoft. If you choose to do so, it is at your own risk, and there is no support available from Microsoft.