MAME 0.142u4 is now posted to the Latest Updates page.
This release features a shiny new HLSL post-effects Shader Engine (written by Bat Country Entertainment), which allows those using a Windows OS and a decent video card with proper driver support for Pixel Shader 3.0 to display many interesting and authentic looking effects. Also, this release introduces a new toolchain which contains the required additional headers needed for you to use this new feature. Obtain these new packages from the Development Tools page.