I don't think they are changing the way forums look. There was no announcement, no discussion in the feedback. And they won't do it in middle of the week.
Seems its some kind of blackout, maybe their servers crashed, their website hosts must have suffered a LONG and disruptive blackout. Seems...
I couldn't access ET for the whole day today. Is Elitetrader down today?
T2W should wish that ET remains down, then I will come and visit here more. :)