Any definitive word on whether f2p accounts that sub during the anniversary period will be granted the heroic character or not?
.. this is definitely not a 'definitive word' but why would a subbed account not be able to claim the reward that is entitled to subbed accounts? 99.9% yes?
Just by logic it should be claimable during the anniversary event period for All Access accounts. Its just a flag for the account which will unlock it without any other prerequisites.