You guys should realise by now that you won't be getting an ETA. Would I like one? Of course! But that isn't how it works. You know why? If you get told that you will be let in at ROUGHLY 8am, then you will expect to get in by 8. Then if something goes wrong, multiple threads pop up saying 'omg its 8:15 and I'm STILL not in!, get your act together Bioware'
Ever heard of under promise, over deliver? Classic marketing, they will always keep it vague so that you are pleasantly surprised.