PearPC, the PowerPC processor emulator capable of running Apple’s Mac OS X on x86, has released version 0.4.0 after more than a year’s wait. “This is the first release with G4 support by Daniel Foesch (you have to enable it in your config). Other features include support for native CD-ROMs (no need for images) and endianess safety (i.e. you can run PearPC on big-endian systems).” The full changelog is here, downloads are here.
If you feel like testing your patience and to have a little fun, check it out.