It looks like EU Aion is finally catching up to NA Aion with the introduction of the rookie server in tomorrow's patch. It's unknown if the addition of the rookie server will have the same effects as the NA version of the server, but I'm linking to the game guide version of it just in case.
It looks like the patch will bring the EU servers back into line with what's currently on the NA servers as demonstrated by the conglomeration that's available in the official patchnotes. Of particular note, the patchnotes include 3.7 as well as the current patch. Gameforge is currently calling the patch 3.9 as adding in the rookie server (obtained much earlier for NA people) is a major patch.
Some of what are in the notes were a part of a minor patch applied on NA servers January 30th, 2013 , so it looks like the NA and EU servers are both at around the same patch.