More screenshots from Windows 10 Build 10125 have been posted online and they reveal many upcoming changes. You can see new desktop icons, all apps can be now accessed faster, new design for jump list, apps indicator on hamburger menu. Gabe Aul from Microsoft has confirmed that this build is still under testing.

New Desktop Icons:

10125 icon

Letters in All apps are now clickable:

Build 10125.1

New design for Jump lists on taskbar:

Build 10125.2

Apps indicator on the Hamburger menu:

Build 10125.4

Progress in taskbar shows from top to bottom:CFrli1uW0AAY6qu.png large

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