MAME Languages.ini v0.148u3 is released. It supports file for MameUI, which attempts to catalog all of the MAME sets based on the language used by the game.

MAME Languages.ini v0.148u3 Changelog:
* 0.23 0.148u3 09/04/2013: Added sets of the 0.148u3.

Download: MAME Languages.ini v0.148u3
Source: Here