It's not a joke. Google Japan is postponing April Fool's Day until next year.
Out of respect for the victims of the March 11 earthquake and tsunami, the Google Japan home page for will display Google Doodles of the 2009 Doodle 4 Google finalists. There were 30 finalists in 2009. Each are represented today.
Doodle 4 Google allows school-aged children to draw Google themed Google logos for the chance to be awarded the honor of having their winning Doodle on the Google home page for a day. The theme for Doodle 4 Google Japan 2009 was "My Japan."
The children created original artwork of what the land of the rising sun meant to them. While the winners were not supposed to be posted more than once, Google Japan felt it was important to come together for their country.