An article describing Black/White's online features has been released. Near the end of the article, there was one interesting tidbit:
http://ds.ign.com/articles/114/1146574p1.html
This is pretty vague, and doesn't state if it's just an invite or a paid trip. Still, it's nice for those that can't attend regionals or need a second chance.
http://www.filb.de/1478Aside from bragging rights within the Global Battle Union, top-performing players may qualify for invitations to live regional and national tournaments in the Pokémon Video Game Championship series for the opportunity to advance to the Pokémon World Championships in San Diego, California, in August.
http://ds.ign.com/articles/114/1146574p1.html
This is pretty vague, and doesn't state if it's just an invite or a paid trip. Still, it's nice for those that can't attend regionals or need a second chance.