The November release of Valve's fancy Steam Controller is right around the corner, and the company seems to be getting the rest of its platform ready for launch day. Specifically, Valve is giving Steam's Big Picture Mode a visual overhaul, redesigning UI navigation in the TV-interface's game library with a more dynamic layout, making tweaks to game-specific pages within that library and updating the look of user profile pages. Valve is also adding FLAC, OGG, Vorbis and M4A support to its music player, as well as experimental Streaming-host support for Macs. Curious? Try it out for yourself by opting into the Steam beta client in your settings menu, or simply check out the gallery below.