I could write very long list of stuff that Apple has arrived late, but implemented it perfectly once they got there. However, mobile-multitasking would never make it to that list. In fact, it would be on my Apple failure list. It took them years to get there and they managed to copy the worst impementation of it from Symbian.

Apple's recent plunders on multitasking actually remind me how far behind competion they were on that front with OS7-9 around late 80's - late 90'. Mac OS was about decade late to multitasking on desktop, but once it got there on OS X it was divinely good. IPhone OS will get there one day.