MAME 0.122 has been released over at MAMEDev. See the whatsnew.txt for release details.
I've updated all the CHD Infos: CHD, BIOS, ROM Baddumps, ROM Nodumps. The ROM Baddump + Nodump total is 474 + 1066 = 1540, baddumps up by 1 and no nodumps up by 27 from MAME 0.121. See Tim's Emulation Page.