Fidelity Automatic Address Update

I just received an email that my Fidelity mailing address was updated, but I didn't initiate the request. I checked to see what my address was listed as and it was my current address. I moved about a year ago and I never changed my address in Fidelity's system but I did change it with my bank. Did Fidelity somehow catch wind of this and perform an address change on my behalf? Has this happened to anyone else? Thanks.