Here's whatsnew:

Fixed an issue with the monitor aspect radio buttons
Various fixes to the themed menus
Added themed menus to the game selection dialog
Prevented modeless menus being used with themes
Added options to view details in MAWS, CAESAR, and progretto EMMA to the game selection context menu
Added PNG support to the place holder image
Added option to choose skins to the Misc menu
Improved the localisation support for the game selection dialog and the game information dialog
Added "Enable VSync" to the video menu
Matched all sets to MAME 0.126u2

Get it here:
http://www.barryharris.me.uk/article_view.php?id=112

-Trebor