Windows 10 build 17040 ISO image files are now available for download. The latest Windows 10 Redstone 4 update added new features and fixes.
You can now adjust how bright SDR content appears when running in HDR mode on the desktop. In addition, the latest update improved the insertion gesture and added a new gesture so you can automatically commit your text and clear out the text in the handwriting panel.
New settings also added that lets you view and manage your activity history, which Cortana uses to let you pick up where you left off. You can read full changelog here.