Microsoft released two Windows 10 cumulative updates to the Release Preview ring today, including PC build 10586.240 and Mobile build 10586.242. The new build comes 15 days after the last cumulative update, which was 10586.218.
As with most cumulative updates, there are no front-facing features. There are, however, a number of improvements and fixes.
Here"s the change log for both the PC and the Mobile build:
Improvements to general application compatibility.
Improvements in the upgrade experience, including fixing an issue where some devices would lose data connections or touch input after upgrading to Windows 10.
Improved the reliability of reminders.
Improved UI for tracking data usage under Settings > Network and wireless > Data usage.
Improved the navigation bar experience for some devices.
Fixed an issue where some SD card readers were not recognized.
Updated Daylight Savings in countries with Daylight Savings changes.
Source: Feedback Hub