I don't think people get it there isn't a grand plan about when ID4 will be finished.
We don't decide "Lets's release ID4 17 on XXth of XX".
Its a little more free form than that like once it's been QC'd, someone fixes the script then as soon as the encoder sees he has scripts to encode, he gets the scripts and does the encode and the release happens as soon as the encoder has uploaded it to the people who distro.
So like I've just started at a new school. What happens if we said to you all "We'll release ID4 on Tuesday night". But I come in from school and can't be bothered with the computer because I'm too tired from running around Manchester and Preston all day and don't encode and up it till Wednesday. All of you would start moaning "ZOMG you didn't release ID4 and you said you would you're SOOO cruel".
So we will NEVER give exact release dates to avoid such situations. Makes sense doesnt it ? -_-
-gumbaloom