Is there any eternal end, seal or limit to holy scriptures?
Israelites and Christians forbid changing holy scriptures, means they are not allowed adding or deleting parts of their scriptures.
Muslims claim, that Mohammed is the seal of the prophets.
But Christians and Muslims both added their own scriptures to those of the Jacobines. Jesus told his disciples, that he could tell them much more, but did not, because they were not able to bear it, obviously until he would open the seals of the prophets.
So further scriptures of the past and or present could be holy, inspired by our true and holy gods too.
We are invited to make our own opinion, but may be not to judge over others, at least not alone without interest in our heavens.
The future canon of holy scriptures does not stop by book number 66!