Today, May 2, in the Battlefield Community Pressroom, the users, got official word on a Press Kit (ToolKit). It is currently in the works, and the details are being put together with Robert Runesson, Head of Art, right now.
There is no said date for the release of the Battlefield 3 toolkit as of yet, but once it is released, expect to be able to download it.
Don't know what a presskit is? - There was a Fansite Kit for Battlefield Bad Company 2 and it contained, a Fact Sheet, the Ship Date, Screenshots, and trailers.
The contents of the Battlefield 3 Press Kit are not exactly known yet, but possible expect something similar to Battlefield Bad Company 2.