Apparently if you just set the timestamp to some future date, WordPress will not release the post until that time, yes.
So, you can write an article, set the timestamp for tomorrow, and viewers going to your site won’t see it today, but they will see it when they go tomorrow.
However, WordPress still pings it’s ‘ping services’ when you publish the article even if it is set in the future. So, it’s possible to have links to future articles floating around out there.
There is an actual timed release plugin out there – but it is commercial (i.e. you have to buy it), so if the ping issue is a problem (which it would be if you’re a commercial blog) you might look for that. (sorry, I don’t remember the URL, ATM).
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Curses! You win this time, HandySolo… ??