I've gotta confess I am quite confused by this. ESE53 leaked a few weeks ago and I've personally been running it since then. I have found a few bugs with it and was under the impression that it failed the QA test so what changed? I also heard that ESE53 was compiled on 2/25 I believe so I'm really confused why it took so long to come out. I guess we'll find out more starting the 18th.
What bugs?
As for compile date--do you think they were able to test it before it was compiled? They needed time to test it.