i put similiar topic several days ago, my friend got same email

notice two month ago, but receive nothing. i help him to call the USCIS, central office said "that means your case is approved", and give us a very long track number and want us to wait for another 45 days. then we call the TX center (since he did think he was the lucky person in the world) and was told it is still pending case on the name check, that notice was actually generate by the computer autoservice, so kind of sad. but hope yours is approve notice, lets know when and what you receive from USCIS.