
More from the irresponsible speculation department.. but IMHO more logically reasoned in this instance: Leander Kahney over at Cult of Mac just found a ridiculously huge virtual keyboard in Snow Leopard.
Located in System Preferences, it serves the same function as it did under Leopard, but is much larger. There's no reason I can think of why one would need a huge virtual keyboard just to show them what happens when you press the option key.
I find this fairly persuasive evidence of hooks being set in the OS for a touchscreen Mac, though I am aware of my bias, being on record as an iTablet fanboi. So take this, as every piece of speculation, with a grain of salt.
(I really do want one of these, though...)
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