Even the Church recognizes the difference between "inspired" writings and "uninspired" writings; the first being written by God through men. So please tell me how there would be no "inspired" writings.
Al says, there will be no canon: the books that are inspired will not be known as such.
One way to visualize it is to imagine a Religion section as Borders that would contain books like this:
Second Letter of John
Tea Leaves, Ouiji, And Other Inspired Stuff
Tao of Hydroponic Tomato
Hymns by Luther
Exodus and Joshua, commentary by Moshe Dayan
Jeremiah
Gospel of Thomas
City of God
Gospel of Judas
The Holy Koran
St. Paul For Dummies
Gospel of Mark and Letters of Peter, annotated by Jack Chick
...