https://www.pcgamer.com/enter-the-gungeon-advanced-gungeons-and-draguns-expansion-will-finally-arrive-next-week/

The free Enter the Gungeon expansion Advanced Gungeons & Draguns was announced in August 2017 and was expected to be out in the fall of that year. That was a little optimistic, as it turns out, but today developer Dodge Roll announced that it will be out on all platforms on July 19. 

"Advanced Gungeons & Draguns includes hundreds of new rooms with dozens of new weapons, items, enemies, and ammo types," the studio said on Twitter. "Hundreds of new, wild synergies. More generous drops rates. Slide over tables and coffins. Lots more…"