I figured this would be worth mentioning because there's an active thread about hacked accounts where there were some suspicious blank POL emails.
I got a POL email seemingly at random at about 0800GMT today and was mostly paranoid about downloading it, but did anyway. It's an official SE mailing about the add-on next week. Presumably there'll be more of these on the release day and relating to the security tokens as they become available. Nothing to worry about, if people have been deliberately not checking POL emails and/or messages because of this.
Note: It seems to solicit you to the purchase page even if you've already have a registration code for it, so don't be scared of this.
((Sorry for 'advanced', but figured more people would see it here))
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