The Pokemon Global Link -- a website that offers added online functionality to Pokemon Black and White -- was originally scheduled to go live on March 30 for North America and Europe. This is no longer the case.
"As a result of the earthquake in Japan and the need to conserve energy resources, the launch date has been temporarily delayed," writes the temporary site. "When a new launch date is determined, it will be published here on the Pokemon Global Link."
So, no access to the Global Battle Union or Dream World for a while. Both of those will make for some great post-game content, and considering how beefy Black and White are, we'll be just fine for the time being.
Pokémon Global Link delayed due to earthquake in Japan [PokemonAus via GoNintendo]