As reported in this article from Diario de Jerez (Google translation here) the sherry vinegar makers and the certification bodies of Spain are planning on introducing a thick, sweet sherry vinegar that would be a competitor with balsamic vinegar. Made from sherry vinegar and grape must from grapes like Pedro Ximénez or Moscatel, the new vinegar cannot be called ‘balsamic’ per EU rules which reserve that name for vinegars from the Modena region of Italy but it would have a similar profile such as at least 15 Brix (150 g per liter) of sugar. It has not been finalized but the regulations are pending. It should be interesting to try!