When does the Alpha Test end?

[Twiddle]

I've been looking over a few pages of forum threads and I haven't seen anyone talking about the end of the Alpha test. I know the Beta test won't start until the end of january (seen this in an article or a thread) but I doubt that the Alpha will end when the Beta starts.

Question is simple: When will the Alpha test end?

* I don't have access to the Alpha tester part of the forum because I haven't been chosen... maybe the information lies there. *

As far as i know, no date has been given for the end of one, and beginning of the other. I would give a week's buffer before and after Christmas as a no man's zone, but really your guess is as good as mine.