Dates: c. 1336 · Wikipedia
Summary: Pope Benedict XII, in the constitution Benedictus Deus (1336), dogmatically settled the question of when the blessed enter glory — the controversy his predecessor John XXII had stirred by suggesting the beatific vision waits for the resurrection. Benedict defined that the fully-purified souls, immediately after death (and after any needed purgation), before they resume their bodies and before the general judgment, already see the divine essence "with an intuitive vision and even face to face." This is the mature Western answer: the cleansed see God at once, not only at the end.
… all these souls, immediately (mox) after death and, in the case of those in need of purification, after the purification mentioned above, since the ascension of our Lord and Saviour Jesus Christ into heaven, already before they take up their bodies again and before the general judgment, have been, are and will be with Christ in heaven, in the heavenly kingdom and paradise, joined to the company of the holy angels.
— Benedictus Deus (1336), papalencyclicals.net (Denzinger 1000–1002). The decisive words are "before they take up their bodies again and before the general judgment": the intermediate state, for the fully-cleansed, is already glory. This overturns John XXII's view (that the souls of the just rest "under the altar," seeing only Christ's humanity, until the resurrection) and fixes the Latin dogma.
… these souls have seen and see the divine essence with an intuitive vision and even face to face, without the mediation of any creature … moreover, by this vision and enjoyment the souls of those who have already died are truly blessed and have eternal life and rest.
— Benedictus Deus (1336), papalencyclicals.net. The blessedness of the intermediate state is here maximal: not a foretaste or a lower rest but the unmediated vision of the divine essence itself — the same vision the resurrection will not increase in kind. The body's reunion adds joy, but the soul already possesses the essential beatitude.
… if they then needed or will need some purification, after they have been purified after death …
— Benedictus Deus (1336), papalencyclicals.net. The bull presupposes purgatory as an established stage: the not-yet-fully-cleansed undergo "purification after death" and only then attain the vision. It thus locks together the two Western developments — a post-mortem cleansing, and an immediate vision for the cleansed — that the earlier Fathers had left as a detaining Hades awaiting the resurrection.