I think it'll stay unlocked indefinitely - so long as you don't want any software updates - it's your legal right to unlock, I think. But whether you can buy a new iPhone and unlock it in future without committing to the required contract is another question.
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unlocked forever?
I think it'll stay unlocked indefinitely - so long as you don't want any software updates - it's your legal right to unlock, I think. But whether you can buy a new iPhone and unlock it in future without committing to the required contract is another question.