RUMOR: Sony has acquired the rights for a Monster Hunter 5 release on PS4 in 2018. Update: confirmed that it is false rumour.

[Shikamo]

The article below did make mention of Nintendo Switch so maybe a timed exclusivity or both consoles launch day ?

articles: http://jin115.com/archives/52174914.html and http://forzaxbox.net/blog-entry-11104.html

If you don't speak Japanese like me try to use some translator to understand a little.

Update:

confirmed that it is false rumour.

here: https://togetter.com/li/1104904