Sunrunner said:What was the source for that juicy info?
Even in the pre-Next days, Apple tended to have more than one OS team going at a time, one on the immediate OS release, one on the 'next gen' project.
It wasn't too difficult to figure out - 10.2 introduced technologies such as Quartz Extreme, Rendevous, the Address Book APIs. 10.3 didn't really introduce the same level of technologies, but did introduce new features (such as Expose) that used the new technologies introduced in 10.2 (QE in this case). Likewise, 10.4 introduced Core Image, Core Video, Quartz 2D Extreme (though it's off by default), Spotlight and Core Data, so presumably these technologies will be leveraged heavily in 10.5
I believe it was Appleinsider or Thinksecret that confirmed what many people already suspected, there were two separate OS teams, which were being merged when Apple announced there would be a longer delay before the 10.5 launch. (If I find the link, I'll post it here).