For those who never heard of it, a book was 'found' in the 1400's that had images of plants not known in modern science and text in some language that has no analog in any other known language on Earth. The main gist was it was just a hoax where the 'letters' were just gibberish but new supercomputer analysis puts the complexity level a bit higher than English or Chinese.
Here is a Wiki on the subject:
If it is a hoax, it is an extremely talented one. The 'words' seem to mean something. It is not just gibberish.
Here is one dude who thinks he has 'solved' it: