https://www.gamespot.com/articles/ps4-monster-hunter-world-beta-now-available-to-pre/1100-6455503/

Monster Hunter World's free PlayStation 4 beta takes place this weekend, but players who are looking forward to trying the monster-slaying action game can start preparing for it now. The beta is available to pre-load from the PlayStation Store, provided you have a PS Plus subscription.

The beta kicks off on Saturday, December 9, at 9 AM PT / 12 PM ET / 5 PM GMT and runs through the same times on Tuesday, December 12. You'll need to have 5.9 GB of space available on your console to download it and be a PS Plus member to participate. You can download the beta here.