Launched today, Windows 8 Release to Manufacturing (RTM) offers only minimal changes to June's Release Preview version, including new graphics (what Microsoft calls "tattoos") for the Start screen and Lock screen backgrounds and interface polishing for some of the Windows 8-specific apps that ship with the operating system. In addition, there have been a variety of bug fixes and performance enhancements, as well as some minor tweaks to the operating system's look and feel.
Apart from that, though, Windows 8 remains essentially the same: a two-headed operating system featuring a new Windows Phone-like tiled interface and Start screen (once called Metro, but now apparently called simply Windows
as well as the traditional Desktop interface. As with earlier preview versions of Windows, these two interfaces uneasily coexist, with the new Windows 8 interface better suited for tablets and touch devices, and the Desktop the better choice for desktop PCs and laptops.