http://www.pcgamer.com/monster-hunter-world-release-date-set-for-consoles-pc-launch-to-follow-at-a-later-date/

When Monster Hunter: World was unveiled at this year's E3, Capcom announced it'd arrive on PCs later than consoles. The developer later confirmed this was "just a resources and manpower issue", and has now set January 26, 2018 as the ARPG's console DOA. 

Despite the announcement ahead of this week's Tokyo Game Show, Monster Hunter: World's PC launch remains unconfirmed—said to "follow at a later date", as per a Capcom statement. The latter did arrive alongside a new trailer, though, which you can cast your monster-hungry eyes over here: