Call of Duty: Call of Duty: Modern Warfare 3: All you may want to know about game's pre-loading details
Time to get ready for Call of Duty: Modern Warfare 3. Pre-loading is simple; wait for it to go live, then download on PC, PlayStation, or Xbox. Pre-order the campaign for early access on November 1, or get the full game on November 8. The game goes live on November 10 or November 9, depending on your time zone.
Source: indiatimes.com