[2019] Is it safe to assume there's some semblance of an open world coming with the 4.0 expansion?

Going by what other modern arpg's are doing it seems open world areas are becoming common place within the genre. For example:

• Diablo 4

• Torchlight Frontiers

• Lost Ark

Path of Exile also has the mostly unused continent of wraeclast

that would be perfect for an open world zone. Given all of this, and considering how 4.0 is suppose to be their "mega" expansion as well as their response to Diablo 4, I think its safe to assume an open world zone could very likely be coming with their 4.0 update. What are your thoughts?

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