» Mon May 14, 2012 12:58 am
Because estimates are very, very difficult to meet. This is a secondary part of the release, and until yesterday their focus was on getting it released. And since most of them probably worked around 120 hours last week, now they're recovering from crunch time, and then they'll be coming back and figuring out where they stand: what unanticipated issues with the actual game needs to be fixed, how to get the CS into a releasable form, getting some tutorials and things on the Wiki for us, etc. How long that will take depends on a lot of factors, and coming up with an estimate is, itself, very difficult and time-consuming. So rather than spend time estimating precisely enough to announce it, they're just going to work on it and get it done.
(note: this is all purely speculation; I have no knowledge of what they are actually doing)