IThome has managed to lay its hands on upcoming Windows 10 build 9879. They have also posted some screenshots that reveal upcoming Windows 10 changes.

Remove search and virtual desktop buttons:

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Internet Explorer 11 toolbar has smiley icons:

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File explorer changes: Pin icons and navigation changes

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Hamburger menu button found in store app:

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Power notification added to display:

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Recycle bin can be pinned to home:

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Source