Safari isn't tied lockstep to a specific OS version at the moment (latest Safari and Webkit nightlies work on Tiger too), so it might be updated when it's ready rather than when the whole OS is ready.
I agree. Safari, starting with version 3, became a stand-alone browser so Apple will release Safari 4 when they decide it is ready. Microsoft was going to tie specific browser versions to specific versions of Windows, but Firefox made Microsoft think twice about that idea and now they are up to IE8 beta 2.
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Safari isn't tied lockstep to a specific OS version at the moment (latest Safari and Webkit nightlies work on Tiger too), so it might be updated when it's ready rather than when the whole OS is ready.
I agree. Safari, starting with version 3, became a stand-alone browser so Apple will release Safari 4 when they decide it is ready. Microsoft was going to tie specific browser versions to specific versions of Windows, but Firefox made Microsoft think twice about that idea and now they are up to IE8 beta 2.