The PDFs for the Outer Ward First Floor and New Materials Volume 01 are available at the & Magazine website, with a link available on the right.
The Outer Ward First Floor document covers the encounter keys to be found on that level. The New Materials Volume 01 document includes all of the new monsters, magic items, etc. that you will need to run all the levels of the Outer Ward. As I publish more levels, we will continue to produce supplements to cover them.
Thanks to Bryan Fazekas and Handley Jackson for editing. Robin Irwin provided the cover and I even made an interior illustration!