It would not surprise me in the the least (in fact I anticipate as such) that King Charles will officially refer to his wife as Queen Camilla once he is King, despite the PR titles that were said will be used for Camilla not long after the untimely but deserved early death of the adulteress Diana occurred and emotions were still raw in the United Kingdom. The wedding announcement was a mere 8 years after Diana met her demise in a crush of metal. By time Charles ascends it’ll be more like 30 years thereafter.
Indeed, the rumblings from Buckingham Palace over the past five years has made clear that Prince Charles is making known that this will be the case.