I don't think we've heard anything about this, so I think you'll need to wait for Blizzard commentary on that over on the official forums. If I had to guess, if they haven't been doing it for previous seasons, they won't do it for this one. Seems they like the weapons being a little more "out of reach" during this expansion.
"...What IS attack power? I cannot find an answer anywhere."
I don't think the comments section yesterday linked Wowwiki nearly enough, so here's a link! A very, very basic explanation of the stat is that it makes melee physical attacks hit harder. Follow the Wowwiki link for a more detailed explanation.
"Why is Lady Sylvanas's new voice less menacing and more cute? It really is awful. I want the old voice over back!"
If I had to guess, I'd say they changed her voice in Undercity because they're doing additional voice work for her later on in the expansion. If they couldn't get her original voice actor back to do the new lines, they would go back with the new voice actor to make the old lines match the new ones. It's unfortunate, because Sylvanas's old voice actor was pretty awesome. There's something to be said for consistency though.
"How about any word on fixing Tuesday lag on XT-002? Every Tuesday same wretched lag during hard mode..."
I have never experienced this, so I wouldn't even know where to look on comments about it. Readers, have you experienced this?
"When a person gets to the "last" boss in ToC, they discover that the Black Knight has crashed the party. If he didn't "crash" it, who would have the final boss in ToC? I was thinking that maybe the Death Knight champion might have been the final boss due to the fact we don't fight any DKs for dailies or even in the first fight in ToC. I think also because it could be a "lets practice fighting an old Lich King minion for experience."
Eadric and/or Paletress was the last challenge. After you beat them, those in charge of the Trial start to congratulate you on winning, and are about to send you on your way. That was it. Two rounds, good game, you win, go home. The Black Knight showing up extends it. If he didn't show up, that would have been the end of it.
"Has there been any word on when the faction changes will be available?"
None. And there were a lot of other faction change questions for this edition of The Queue as well, but I'll hit them all at the same time as this one: We cannot answer most of them until Blizzard opens the service up to the public or posts a more in-depth Q&A on it. The WoW.com team doesn't know any more about that particular service than what Blizzard has already told us, and that isn't much.
Have questions about the World of Warcraft? The WoW.com crew is here with The Queue, our daily Q&A column! Leave your questions in the comments and we'll do our best to answer 'em!