Well, Argus content is awful. Nevertheless that's no reason for an earlier release date than September '18 as you said. We won't have the expansion any sooner than that which is sad but that's how it is.
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Yeah just thought there maybe had been any ptr "leaks" etc. I'm not up to date because I'm playing the new (and awesome) GW2 expansion at the moment but I still want to somehow know if there's been anything new lol