The trailer is past because the game is not new and is not even the latest game which is Call of Duty Black Ops. The Modern Warfare 3 trailer will be out in 6 months
The clues were released at different times to accommodate to time zones. On day 1 the clue was released at 9am GMT and on day 2 and 10am GMT.
10am EDT is 2pm GMT. The time difference between EDT and GMT is 4 hours, with GMT being ahead.
GMT-6 to GMT-8:Mexico City, Cancun: GMT-6Mazatlan, Los Cabos: GMT-7Tijuana, Ensenada: GMT-8
GMT +6
7pm MST is 2am GMT the following day. MST is 7 hours behind GMT.
GMT + 7
gmt
GMT +8:00
GMT stands for Greenwich Mean Time. It is named after Greenwich England.
the same time as GMT
The clue on day 2 was released at 9am GMT.
In terms of time zones? England is in GMT+0 while Mexico is on GMT-6, GMT-7 and GMT-8