If Romfea is to be believed, this is already been decided and agreed upon. While remarriage of clergy has been (rarely) allowed in terms of economy, never has the rule of being the “husband of one wife” been overturned. Until now. It is unclear as to the motivations of the change.
To read the full article from Romfea, please visit: http://www.romfea.gr/oikoumeniko-patriarxeio/23626-apofasi-tou-oikoumenikou-patriarxeiou-gia-deutero-gamo-iereon