A few days of the release of the official release of the build 10586.164 for PCs and smartphones, the surprises are not finished yet. Already spotted the build 10586.212, however, it could be replaced by more recent build 10586.218.
Build 10586.218 was compiled on April 4, a new version of Windows 10 and Windows 10 Mobile TH2. The new release 10586.218 could then take the place of the previous and apply very soon as new cumulative update, both desktop and mobile.
Microsoft is continuing to work tirelessly to improve all aspects of Windows 10 and Windows 10 Mobile, especially on the latter, as we have already reported to you, after the official release for Windows Phone 8.1 terminal.