A few guys have been asking about this, and to be honest it wasnt difficult to find.

Below is from the EA website with the official release dates for all regions. Although it does conflict with the dates on my origin account which says i will get it on the 20th and not the 21st (australia)
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When will Crysis 3 be released?

For full, detailed information on Crysis 3's release dates and times, read below. Ensure you know which region your nation belongs to in this article.

?North America will find Crysis 3 available on February 19th at 00:01 EST/EDT
?Russia will find Crysis 3 available on February 19th at 11:01 MSK
?European Nations (except Ireland, Portugal, United Kingdom) will find Crysis 3 available on February 21st at 00:01 CET/CEST
?Australia will find Crysis 3 available on February 21st at 00:01 AEST/AEDT
?Ireland, Portugal & United Kingdom will find Crysis 3 available on February 22nd at 00:01 GMT/BST
?Japan will find Crysis 3 available on March 7th at 00:01 JST

Direct link>> https://help.ea.com/uk/article/crysis-3-game-access-technical-product-faqs#1
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Hope this clears it up for people.

other people get 3 days headstart, f.... uk