Bungie have already started this weekends double EXP playlist for Halo 3.
What is this weekend's theme you ask?
To celebrate the upcoming holiday, Cinco De Mayo (Fifth of May), Bungie is throwing a fiesta!
Fiesta, is a Halo 2 inspired game where players spawn with random weapons. To play you Fiesta requires both the Heroic and Legendary map packs. Also announced is this weekend's playlist will be available until Tuesday.
Oh yeah and Happy May day!