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And as Video: http://www.youtube.com/watch?v=LNmDwPjrXIs
So, they're shooting for 1-hour dungeons... Should be nice most of the time, as we all know how much like a lifetime they tend to feel with the wrong group.
Though I do admit I do like having the odd long dungeon crawl as well.... So here's hoping they'll add one or two longer ones here and there.