Yeah, they havn't played Week End for four of their recent lives, and I had a feeling that was going to happen when they cut the song in half at the Taipei concert. I have no idea why they're not playing it now, its a classic right up there with Kurenai and X.
And for me its currently 00:34 am. I thought the concert would've started hours ago since it was today, maybe its a 8 or 9:00pm concert over there or something, meaning it would be 2-3:00 am here when the concert starts.
I think the setlist will remain the same, except for one song change and maybe the order will be slightly different.