MAME4iOS v1.6 is released. iMAME4all is a iOS universal app done by David Valdeita (Seleuco), port of MAME 0.37b5 emulator by Nicola Salmoria & TEAM for all jailbroken iOS devices (iPad HD, iPhone 4G , iPod touch and older) and it is based on GP2X, WIZ MAME4ALL 2.5 by Franxis. They emulates arcade games supported by original MAME 0.37b5 plus some additional games from newer MAME versions.

MAME4iOS v1.6 Changelog:

Added Peer to peer netplay multiplayer over WI-FI or Bluetooth. Options menu reworked. Added Vector defaults options. Added Emulation speed and thread type options. Sixaxis fixes. Some other bug fixes

Download: MAME4iOS v1.6 for non-jailbroken devices
Download: MAME4iOS v1.6 for jailbroken devices
Source:Here