A report aiming at ensuring the rights of succession and inheritance has just been adopted by the European Parliament.
As indicated in the report, a state "should not be able to apply the public-policy exception in order to set aside the law of another State or to refuse to recognise, or, as the case may be, accept, or enforce a decision, an authentic instrument, or a court settlement from another Member State when doing so would be contrary to the Charter of Fundamental Rights of the European Union, and in particular Article 21, which prohibits all forms of discrimination."
But attention, this is not a new law. The Parliament just wants to make sure that the existing law is obeyed.
According to LGBT Intergroup, the report acknowledges that "families in the European Union are diverse" and include "different-sex and same-sex parents [...] who deserve equal protection under national and European Union law".