The upcoming Iceborne expansion for Monster Hunter World will be the game's only expansion, according to producer Ryozo Tsujimoto. In a recent rapid-fire interview video from Game Information, Tsujimoto stated that the developers at Capcom view Iceborne as the piece that completes World's story, which is what has led to the decision for this to be the only DLC expansion. Along with that tidbit, some over details for the update have been revealed.
Around half of Iceborne's plot will take place in the brand new "Hoarfrost Reach" region. The other half will reuse existing areas with new quests and monsters to hunt. Tsujimoto also confirmed what many had speculated: Iceborne's "Master Rank" will be equivalent to the "G Rank" from classic Monster Hunter entries. Not content to unleash the update and be done, Capcom will support Iceborne with regular updates and events much as it has with the standard game's release.
As a reminder, Iceborne will be launching on September 6, 2019, for PS4 and Xbox One. A PC release is planned for Winter 2019.