There is no reason to believe that God would present further revelation to add to His Word. The Bible begins with the very beginning of humanity–Genesis–and ends with the end of humanity as we know it–Revelation. Everything in between is for our benefit as believers, to be empowered with God’s truth in our daily living. We know this from Timothy 3:16-17
If further books were added to the Bible, that would equate to saying that the Bible we have today is incomplete – that it does not tell us everything we need to know. Although it only applies directly to the Book of Revelation, Revelation 22:18-20
We have all that we need in the current 66 books of the Bible. There is not a single situation in life that cannot be addressed by Scripture. What was begun in Genesis finds conclusion in Revelation. The Bible is absolutely complete and sufficient. Could God add to the Bible? Of course He could. However, there is no reason, biblically or theologically, to believe that He is going to do so.