They have never said it was coming with Heavensward... and it's too big of a change to not have mentioned by now.
All I heard, was there is going to be an EU dedicated server in the future. I expect that to be a long time ahead, and it could even just be something they are looking into, like others have said.
If you have problems with lag, use WTFast or something else that helps, because there is no point in waiting for this. The money sucks, but it's you're only option
