As far as I can tell without actually submitting one, it's the same form. You do need to go through their special "Final Rule blahbty blah" site. There's a big red banner on the main login page, but all that seems to do is lock you out of the other available eforms, makes you click tax exempt, and locks you into a SBR* form 1.
FWIW, while they say they may require pics of the weapon, it's optional to submit them with the Form 1. They ask for a close up of any existing engraving on the line item part, but they do that on the tax paid Form 1 as well. There's nothing saying you *HAVE* to give them a picture of the firearm. Do with that what you will.
* It indeed locks you into an SBR form 1. I know there are shotguns out there with pistol braces on them. I wonder if they were all sold under the AOW overall length, or if the ATF just didn't think about them and screwed those owners. (more than they screwed the rest of us.)