Some changes that you can expect arriving with future Windows 10 Mobile Redstone Builds have been leaked by various sources.

New Settings Icons:

After refreshing and bringing new icons for many settings and sub-settings with Build 14322, Microsoft seems to be redoing it with new icons for many sub-settings yet again. Check some of the changed icons below and click on the source link for more.

Windows 10 Mobile Build 14342

Build 14342 icons

Swipe in Microsoft Edge:

Microsoft Edge will get Swipe to go forward and back soon. Check the videos that demo the upcoming feature in both Mobile and PC versions of Windows 10.

Read all the changes (official + unreported) that Windows 10 Mobile Redstone Builds have brought so far and watch hands-on impressions videos at our dedicated page.

Source