Interview Letter
Finally, we got an Interview Letter for an Interview in about two weeks. It seems like in our case the transfer to the local office has been a result of the fact that we have been married for just a short period of time before my husband filed for the I-485. In the attachment to the interview letter, they ask for several different kinds of evidence that we live together such as mortage arrangements, joint bank accounts, pictures, even swarn testimonials from friends, co-workers etc. They ask for nothing else much but recent employment letters and pay stubs as well as valid passports. My interview is scheduled half an hour before mu husnband's interview.
I hope this helps. I'll let you know how the interviews go.