Here's whatsnew:

Ported MAME's Z80 core to FBA
Hooked up MAME's Z80 core in the System 16 games that use MC-8123 encryption, sound now works in these games
Hooked up MAME's Z80 core in the Sega System 1 games, encrypted games now work
Added more games to the Sega System 1 driver
Changed the Sega System 1 drivers to appear in the Sega games list
Got the YM2151 sound working in Cotton
Added support for the UPD7759 sound chip
Hooked the UPD7759 chip up in the System 16B driver
Hooked the UPD7759 chip up in the prehisle driver
Hooked the UPD7759 chip up in the tmnt driver
Rewrote the Sega PCM support - solves quite a few problems, particuarly in enduror, outrun and smgp
Fixed an issue in the Sega System X driver which caused missing sounds in abcop and smgp
Fixed bug in the YM2612 emulation when more than one chip is emulated
Changed the CPS-1 rendering code to use the mapper tables from MAME
Added smgpja to the X-Board driver
Added shinobi4 to the System 16B driver
Added ledstrm2 to the madgear driver
Added command line options, -listinfowithmd and -listinfomdonly
Fixed the version output in dat files
Fixed bug where any rom errors weren't reported
Matched all sets to MAME 0.124u3

Get it here:
http://www.barryharris.me.uk/article_view.php?id=92

-Trebor