A new build from the NES emulator FCEUltra-Win32-mappers-modified has been released a few days ago. This emulator is based on FCEUltra source code snapshot (fceu-0.98.13).
Latest WIP build (uploaded: 28.05.2008) available here (Note: this strongly BUGGY version, this just for testing new mappers and stuff.)
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Thanks to our affiliate, AEP-Emulation, for the news!