Here is the order guide for the US A3, we expect the first cars to show up mid-April for the May launch. I gaurentee that it will take at least 5 reads before you understand the available option configurations. Any more info becomes available I will let you guys know.
<img src="http://onfinite.com/libraries/296254/779.jpg">

Power Seat: Get the Premium package
Sport Seats: Get the Sport package (Manual Seats)
Then, add the options in ech horizontal column to either the Sport Package or the Premium Package.
The Sky roof is available on either packages as is Rear Airbags

What I noticed is you cant get Xenons with the premium package and most of the colors are extra and the charge you for metallic paint too in some cases both. I love Audi by why cant they do anything simple. I always feel like I'm reading some obscure tax law/regulation when I read their order guides.