There appears to be a lot of confusion about whether we will get three quest chains in the course of the event, or all four.
I'm positive I did all four on the quest server, and have been telling people that it's four chains of 150 eggs for ages now. But other people seem to think there's only time to do 3.
As much as I respect the playerbase, I'm looking for official confirmation of how many chains there will be. If you have a link for a post of someone official confirming this, that would be great.