Microsoft has released cumulative update KB3209835 for Windows 10 users on Microsoft Insider Ring. Update is released for both PC and Mobile users.
With this update the build number is incremented to 14393.594. The knowledge based information hasn’t been updated yet, so no changelog information is available. Usually changelogs are only made available, when update is released publicly to stable version of Windows Operating Systems.
Check Windows 10 Preview Update KB3209835 Manually
As all the updates are downloaded and installed automatically in phased manner. If you want to manually check the update you can head over to Settings > Update & Security > Check for Updates.
Direct Download KB3209835.cab file32-bit 510 MB 64-bit 948 MB
You can also create Windows 10 Update Shortcut to check for Windows update in a convenient way. Windows 10 Update shortcut is fastest way to check for released updates manually.