To celebrate Modern Warfare 3 Collection 1′s launch tomorrow on the PS3, Infinity Ward is going to turn on Double XP this weekend across all three platforms. Non-premium Elite Modern Warfare 3 owners on the PS3 will be able to purchase Collection 1 tomorrow, April 19th. The pack includes four multiplayer maps, Piazza, Liberation, Overwatch, and Black Box, and two special ops missions, Negotiator and Black Ice. The DLC will run you $14.99, and if you pre-order it today, you’ll get a free MW3 theme. New trophies have been added recently for Elite users. The trophies will be accessible for the rest of PS3 players who choice to purchase the DLC. You can check out the trophies here. You will start earning Double XP at 2am PST (5am EST) this Friday, April 20th on PC, PS3, and Xbox 360, as announced on the official site.