Here are the major improvements:
Now You can adjust the SDR brightness on HDR display:
Starting with Build 17040, Windows now lets you adjust how bright SDR content appears when running in HDR mode on the desktop. On an HDR capable system, you will see a slider in the “HDR and advanced color settings” page under Settings > System > Display. This is one of the improvements to HDR image quality that we have planned based on feedback from Insiders.
New Cursor, pointer, and touch feedback section in Ease of Access Settings:
Open Settings > Ease of Access > “change cursor thickness”, “Change pointer size and color”, and “Change touch feedback” have been moved to this new place.
Shape-writing with wide touch keyboard: With the Fall Creators Update Microsoft introduced shape-writing input for one-handed keyboard.Shape-writing is currently available for the following languages: Catalan (Catalan), Croatian (Croatia), Czech (Czech), Danish (Denmark), Dutch (Netherlands), English (India), English (United States), English (United Kingdom), Finnish (Finland), French (Canada), French (France), French (Switzerland), German (Germany), Greek (Greece), Hebrew (Israel), Hungarian (Hungary), Indonesian (Indonesia), Italian (Italy), Norwegian, Persian (Iran), Polish (Poland), Portuguese (Brazil), Portuguese (Portugal), Romanian (Romania), Russian (Russia), Spanish (Mexico), Spanish (Spain), Swedish (Sweden), Turkish (Turkey), and Vietnamese (Vietnam). A new Gesture has also been added : goo.gl/iPmiT4 Improved button layout for Chinese (Simplified) Handwriting: If you use Chinese (Simplified), you’ll now see a layout similar to the one announced for other languages with Build 17035. The buttons in the handwriting panel are collapsed by default – tap the button with the ellipsis to expand them.