On November 18th there was an official release of our favorite emulator. Being busy with my family issues I didn't even manage to get the latest images; and yet another (u1) update comes in... I better get going! You can read more and download the command-line release from here. MAME32 ui version is available here. If you already have the latest official update and feel like compiling head over here and download the latest u1 release.

Whacker

Not one, not two, but three source updates are available at mamedev's site. These cover several fixes on current drivers but what I found significant was the changes on Mortal Combat 4 driver. If you feel like compiling head over here and download the latest releases.
Whacker