It sounds to me that they are preparing for same sex marriage.
There is nothing in Canon Law which would allow for same sex marriage.
Is "Same Sex" marriage specifically referenced in Canon Law? I am referring specifically to those specific two words in quotation marks.
If the Vatican decides to call in "Same Sex" and to define it as separate from ɧoɱosɛҳųαƖity due to some technicality like "lenght of conjugal commitment" or "altering social mores" then they could.