Revelation is not the last book written it was just placed as the last book in the Bible.
The only thing I recall the bible mentioning about prophets after Christ was in Revelations, where it speaks of false prophets.
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Rev. 14
6 And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,