Ok so I've received my game in the post (pre-ordered from 'Game' btw) and only just got steam for this one occasion (so I don't know much about it). If I live in the UK will the game unlock at 00:00 Greenwhich Mean Time (GMT)? or is it set to some sort of world-wide standard time? If the later is not true than is the game technically unlocked and released in say Japan, Australia, New Zealand, etc:?

oh and I've heard that it actually unlocks at 22:00 on the the 10th. Is this true?

If you are GMT+0 it unlocks at 0.00 tonight.

unlocks for you at 2am I think, I am not so sure of UK times but for US Americas unlocks (not just US but N & S America) is at 11th 12am est which is 10th 11pm central 10 10pm mountian and 10 9pm pcf.

The game unlocks at midnight YOUR time.

Go to this page at Steam: http://store.steampowered.com/app/72850/ and it will tell you when it unlocks today or tomorrow. Japan is the only country AFAIK that doesn't unlock today or tomorrow.

Nah the unlocks are divided into zones. GMT standard is a zone, so it unlocks in GMT+0 at 0.00 - here in Denmark its GMT+1 and unlocks at 1.00 am.