zirias@
Developer
Apple didn't even have a problem with OS-X being an entirely new OS with no backwards compatibility whatsoever, so, yes.Obviously Microsoft cares a lot more about compatibility between major versions though than Apple does.
I don't know how much Apple cares for API stability between Releases of OS-X, no experience on that platform, but they certainly don't do the "extreme" thing Microsoft does, which amounts to attempting to stay compatible even with application software doing both undocumented and plain wrong (according to docs) things. For that reason, you find tons of silly cruft in Windows APIs, I just gave one example I remember