As first posted by Vaneras of the Blizz EU community:
http://forums-en.wow-europe.com/thre...n&T=716283&P=2
Stated again by Caydiem of the Blizz NA community:
http://forums.worldofwarcraft.com/th...=1#post6306920
aaand ... test servers will be coming *back* up for a while this week:
http://forums.worldofwarcraft.com/th...=1#post6309117
Also, further indication that it won't be until Jan:
http://forums.worldofwarcraft.com/th...=1#post6307975