Jayde hit 80 and ran CoT:Stratholme and, again, made a video for us all to see! He tanked it specced frost. There are 2 parts (V1, V2) to the video and combined they are over 30 minutes long. You can ask questions and read the discussion in this THREAD that Jayde created in the forums.
Part 1

Part 2

Lots of activity from blue posters in the forums as of late, might be more signs of a coming 3.0 PTR. Most active the past couple days is Jeff Kaplan himself (aka Tigole). Here are a few of the highlights:
We can’t fly in Dalaran, is this a bug?

Tigole

For the time being, it is intended [...]

He didn’t answer much, but did say that 3.0 will be on the PTR’s soon!

Tigole

None of the classes are done. They are still being iterated on. 3.0 will be on the PTR’s soon. There is still a lot of testing before 3.0 would go live to public servers.

If you look back at past patches, [...]

We saw this with The Burning Crusade, 2.0 was released about a month and a half before the actual release of the expansion. Just as expected, it’s gonna happen again! Soon! Early November release date anyone?

Eyonix

With the release of Wrath of the Lich King approaching, we wanted to provide you with some important information. [...]

This time Eurogamer talked them up about Ebon Hold, ganking level 55 DK’s and the definition of a hero class. Below are the highlights about Death Knights. You can hit up Eurogamer for the full interview.

Eurogamer: The Death Knight starting area is very different to anything you’ve done in World of Warcraft before.
Tom Chilton: [...]