A new version of the arcade emulator MAME has been released. Here are the major changes in version 0.190:
The preservation train keeps rolling on with the scheduled September release of MAME 0.190. The Gaelco spree continues with Glass, Alligator Hunt and Maniac Square, and we've added support for two games on the hilariously misguided Tiger R-Zone system: Batman Forever and Indy 500. Emulation has been greatly improved for Mazer Blazer, Great Guns, and the Tecmo World Cup '94 family of games, although all these games still have issues with unemulated protection.

In computer emulation, we've added support for ZX Spectrum slot devices. You'll still get the Kempston Joystick Interface by default, but you can now swap it out for other devices, including a number of Currah cartridges. There are also some big improvements to the HP9000/300 series, and support for HP85 option ROMs.
You can find the full list of changes here. You can download the new version from the MAME page.