I haven't had any strange noise on my 2010 yet at 23k miles. Knock on wood.
Guessing that you probably meant "intermittant noise". Did the noise come and go at certain speeds or colder weather or any predictable thing or was it just random?
Trying to figure what it was that fixed it if they just cleaned it up and screwed it all back together as you mentioned since you didn't mention any new parts or anything was loose.
First, I guess, are you are sure the noise you hear now is the same noise they fixed before?
Time flies like an arrow.
Fruit flies like a banana.