It seems that the PC re-release of Final Fantasy VII slipped out early on the Square Enix website over the weekend. It has since been pulled, but it looks like it did go up for sale, priced at about $12.
From accounts of the posting, it seems that it only took a couple of hours for Square Enix to realize that the game was made available on their site, with a 'coming soon' message quickly replacing the sales link.
According to posts on Square Enix's forums, the title uses the beloved SecuROM digital rights management system, and it looks like some of these early customers were already having problems with it. Activations failed even with manual serial entry, according to accounts on the forums. But, to be fair, DRM issues might have stemmed from an accidental release. Let's hope that authentication issues won't arise with the game's proper release.
If nothing else, at least we know that the game will be cheap at proper release!