Okay, this might be a case of language barrier, but your question was answered in the second post.
ETA= Estimated Time of Arrival. It is no more than an educated gues. Vash, the guy in the screenshot, is the proofreader, the very last guy to work on the update before it is released. He estimates it will be a week.
Ergo: Creator says ETA = 1 week.
I am assuming that you meant the english acronym btw, not Euskadi Ta Askatasuna. The game has no connection to those guys, I hope.
I am sorry if that is not quite what you were asking, but I had to do some interpreting here.
Ooh, I figured out what you meant.
Answer: So what, who cares?