Time to check out your ESO launchers.......

The unfortunate part.....it requires a fresh install, so start making space.

I think you're a little late, the EU patch came a few days ago... but thanks for the update anyways!

Also, there's a workaround to avoid downloading the whole thing... just search the forums!

You might want to check this topic:

http://www.gamesas.com/topic/1488717-launcher-update/

Crap..I checked the other day & noticed the change, but no prompt for a fresh install.