When Apple first introduced their PowerMac line, the term was PowerPC. This included the 601, 603, and 604 series processors from Motorola. The third gen or G3 when it came out was a relatively fresh-sounding almost futuristic term. G4 w/Altivec or velocity engine countered MMX in the PC world. The GX term has lived a long and healthy life just like its predecessor PowerPC. If Apple really does have something "special" in the works, and is doing some major architectural changes, then I think it's time for a new term. Any speculations? G5 is starting to sound so blah.