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It will probably be available through the Apple Keynote podcast which you can subscribe to from the iTunes podcast directory.
 
Seriously what moron at apple is not pushing this keynote to the podcast so we can watch it in HD on my TV? I mean this is what the freakin AppleTV is for dammit! WTF would I want to watch the keynote on a PC when I can view it on a 52" HD Sharp Aquos? I swear common sense is just not common anymore....

Seriously can I get a job with apple and start making really easy decisions....
 
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