MAME Languages.ini v0.146u1 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 v0.146u1 Changelog:
* Added sets of the 0.146u1.
* 36 sets renamed.

Download: MAME Languages.ini v0.146u1
Source: Here