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I think 0-day means something a little different http://en.wikipedia.org/wiki/Zero-day_attack

That Wikipedia article appears to give the same definition. What difference are you trying to call attention to?

They are correct (it's zero-day) in that the vulnerability is announced, yet Adobe says it's going to be a week (the 21st) before they release a fix.

Vulnerability known before the vendor can release a fix is "zero-day".