I checked online yesterday and there was no update.
I checked right now and it was last updated today 10/16/12.
However, it says my i821 was approved on 10/12/12 and a letter mailed to me. And it says my i756 card was mailed to me yesterday, 10/15/12.
I never got a text or an email. My account only updated today.
I hope that helps.
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Vermont Service Center - Biometrics walk in: Sept 11 --- (original date Sept 14)
RFE letter printed: Sept 21 --- RFE letter received: Sept 27 ----- RFE letter received at USCIS: Oct 9, 2012
i821 Approval: 10/12 - EAD mailed out 10/15 - EAD received: 10/17