Ok, as a thought exercise, let's put OPs pedantic post on the virtues of absolute precision of language to a pedantry test itself and see what we find:
Nope, he said "It'll do anything your Mac or iPhone can do and more"
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Your quote on which this whole thread rests is untruthful.
No he isn't. He's talking on YouTube. At the time he was talking in the lobby of Apple Park to a morning show host, and they chose to cut up what he said and broadcast it at a later time. ABC broadcast parts of his interview on television at onetime, but that's not where he's talking now. By the standards of this thread, every word must be precise or it's a lie.
Your statement that he's talking on television is untruthful.
He only said it once and your phrasing here makes it appear as though he said it more than once. It's hard to know what your intended use of "Again" is here just as it might be hard for everyone to agree on what can/will means in the original quote, so I'll choose the one that comes first to my mind and consider this statement untruthful.
Here you're specifically saying that he did not way "will", but "it'll" is a contraction of "it will" so this is not only sloppy misquoting but is a direct contraction of the factual record and is untruthful.
The host, in her anchor desk discussion, says she used AVP and used other devices and that AVP "is a computer" and is "different than what people are thinking about".
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So by the hosts experience and interpretation, not recitation of what she'd been told, what Cook said is, in fact, truthful.
I just watched this video a couple times to make sure I didn't miss something, and can confidently report that, no, he did not tell us or anyone that. Your statement is untruthful.
He said "it's a platform" and he can't wait excited to "unleash it on developers" so they can create those apps. So no, he didn't say this. Your statement is untruthful.