New Updates and Features of Windows 8.1
Windows 8.1 provides new Start screen options.
Having only two sizes for the tiles on the Start screen, as was the case in Windows 8, really wasn’t sufficient to accommodate every different type of live tile. Windows 8.1 provides a number of different sizes so that live tiles can display useful information.
In addition to the new tile sizes, Windows 8.1 makes it easier for you to group and name sets of tiles. You can also choose your own background image for the Start screen.