This site seems semi-helpful and mostly up to date.

One (of many) problems with the current I-129F form is that it asks for these things that, by all accounts, including our lawyer's, are no longer required. In fact, they are not just not required, they are unwanted. Number one on this list: old form "Adit" photos - I don't even know what that term means, but I think it means the kind of photo that the instruction form very, very clearly asks for - 3/4 view. They want full-frontal action now. So what gives?

Well, crap, can't rush these things. If I weren't so lazy, I'd dig up the post linking to an article about the thousands of couples who were shelved for having incomplete applications after USCIS found them deficient for failing to include information which USCIS never asked for. Get it? Congress passed a law that basically boiled down to a requirement for 2 questions to be added to the I-129F: did a marriage broker set you up and oh, by the way, have you stopped beating your wife. But USCIS didn't get the questions added to the forms (admin law, ah the review process, etc etc) by the time the law took effect and - PRESTO! - instant non-compliance by thousands who had no way of knowing they weren't complying.

As with the previous visa issues - my head spins because there's a basic standard to prove, ample discretion, but little exercising of that discretion. What do Rob and I have to prove? That we're in a bona fide relationship.

Anyone have a question about that? No, didn't think so. But we have to show the US government in the way they want to be shown. Trouble is, they don't give the best instructions. Or they do and I've just been in school way, way too long. It probably only take the two of us to change a lightbulb, but the number of lawyers and engineers required to correctly assemble this petition is far, far greater.