unofficial translation from the live producer letter: http://goo.gl/tMzrF
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F: Q: This one is from the forum, for the dungeon you said it will be instanced but does that mean all public dungeons will be gone?
Y: you can say everything will be gone but like those added in 1.19 like Beastmen Stronghold in public field it’s up to if you call those dungeons or not, I want to keep stuff like that in there. But for stuff stuff we want players to use strategy in groups we want to make it instanced.
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I think he's still gonna keep some non-instanced areas so should be good imo.