Bit of an update on this.
To unlock 6680/30 or N70
You can phone your providers im lead to believe these are the costs.
Vodafone = £20, but free if they take ages.
Tmobile = £15
Virgin = Free
3G = £115 to £150
02 = £unknown
The new nokia phones are known as BB5 phones, ive heard ruomers around the net that its pos to unlock these type of phones through BB5 usb ublock but its all speculation.
Ive been told Flashing with unlocked Firmware will not unlock these phones.