Microsoft has today shown off a number of changes being made to the Start Screen with smaller tablets on Windows 10 above 8 inches. The Start Screen now hides the Apps List in a hamburger menu, instead of permanently displaying them.
This allows live tiles more room and users to better customize the Start Screen. The taskbar is still apparent at the bottom of the screen, however it's mostly there for the Start Button. By default open apps do not display down there, but you can turn that on if you wish.
Microsoft is making a number of different changes to Windows 10 just before RTM in a couple months, and these new changes should be pushed to Insiders in an upcoming build.