It seems that Hasbro made a small mistake, on their list of Collection 2 figures. The figure that was listed as "Padmé Amidala: Tatooine Outfit" has now changed to "Padmé Amidala: Wedding Dress". Note that this doesn't mean that the Tatooine Outfit isn't being made, since that's quite a large error.
I'm betting that the Tatooine Outfit figure was supposed to come out later in the year, and the person that posted the figure info on the Official Site, just mixed the names up. Since it's doubtful that Hasbro would make such a specific error, if both figures weren't being produced. They probably just mixed up the names.
MTFBWY and HH!!
Jar Jar Binks