Originally Posted by macthinkdifferent
I believe that the reason that they did not implement the new tab interface has to do more with them choosing not implement the new interface that they have been designing. Perhaps the tab interface is part of the new interface. Having it just in Safari would be inconsistent.
I think this is a very good argument. Leopard isn't going to be getting a UI makeover and Safari 4 Beta's Tabs on Top, for better or worse, stuck out.
On the other hand, Snow Leopard still has three, maybe four months in the cooker depending on when
in September it ships, so I still like to think they'll sneak in a refined UI, i.e., the replacement of Aqua elements, window controls, buttons, and scroll bars with something more akin to iTunes 8. They unveiled Leopard's new UI just before it was originally set to release before being delayed (for the iPhone), during which time it saw even more changes. John Gruber, who put out the original rumor about this "Marble" UI now thinks it won't make it into 10.6, but he's been wrong before.If
Apple introduces last minute changes to Snow Leopard (which would make some logical sense considering they don't want to give Microsoft three to four months to copy such a UI), I could imagine Tabs on Top becoming new UI standard for applications that benefit from tabs, namely Safari and word processors/text editors, along with (maybe) the Finder. Developers would obviously have the option of using Apple's method or their own implementation.