Update: ngPSP v1.1 by neXis has now been released and includes s60 port code fixes, increased compatability (Metal Slug now works, for example), and also a small speed increase too!
Today ngPSP v1.0, a Neo-Geo Pocket Color Emulator port of NeoPop for the PSP, has been released with a NGP File Selector! Currently it offers a basic menu, high game compatability, slow but decent fps, and supports both NCP (B&W) and NGPC (Color) ROMs... but has no sound yet. According to the ReadMe file, future updates will include a real GUI, integrated ROM Selection, sound, and source code. Cool stuff indeed!