Two quotes from that joint statement I'd like to pull out. First a statement of history/theology:
both traditions also clearly affirm that the Father is the primordial source (arch‘) and ultimate cause (aitia) of the divine being, and thus of all God’s operations: the “spring” from which both Son and Spirit flow, the “root” of their being and fruitfulness, the “sun” from which their existence and their activity radiates;and a recommendation:
that in the future, because of the progress in mutual understanding that has come about in recent decades, Orthodox and Catholics refrain from labeling as heretical the traditions of the other side on the subject of the procession of the Holy Spirit;
These are the recommendations which are recognized as something beyond the usual ecumenical irenicism we have gotten used to hearing from these dialogs. It is precisely because of these recommendations that progress resumed in talks after they were broken off over the pretensions of certain Eastern European particular churches to be a method for a reestablishment of communion between the Patriarchates and Rome.
“# that the Catholic Church, as a consequence of the normative and irrevocable dogmatic value of the Creed of 381, use the original Greek text alone in making translations of that Creed for catechetical and liturgical use.
# that the Catholic Church, following a growing theological consensus, and in particular the statements made by Pope Paul VI, declare that the condemnation made at the Second Council of Lyons (1274) of those “who presume to deny that the Holy Spirit proceeds eternally from the Father and the Son” is no longer applicable.”