Back in the day it was once every 3 years!
What's up with the next World Championship being two years away?

Carlsen won and defended his title 2 years in a row against Anand, and now FIDE seems to have settled on the 2 year cycle. I think it should be annual if they are going to stick to the 12 game format.

Weird. It seems like the championship should be every year, like the Superbowl. Though I do recognize that putting on an event that lasts nearly a month is a bit different from putting on an event that lasts only a day.
This is the first WC I've followed, so forgive my ignorance. I noticed they said that the next championship will take place in exactly two years.
Is it not annual?