Was this posted? Some tidbits from MMO-Champion:
The first new 5-man is called "Endtime" where Nozdormu will show players the future if Deathwing wins.
The second new 5-man, "Well of Eternity" is a journey into the past, the War of the Ancients specifically, to help Thrall recover the Dragon Soul to use against Deathwing.
The third new 5-man, called "Hour of Twilight", has players escorting Thrall in present day to Wyrmrest Temple, where the final battle against Deathwing will take place. (via Joystiq)
The new raid is called The Dragon Soul. It contains eight bosses, and boss 7 and 8 are both Deathwing.
The new legendaries are two daggers (main hand and offhand) that are only usable by all three Rogue specs. Combat Rogues will be made to use these daggers as well without a DPS loss. The questline will revolve around the pure black dragon (from the egg in the Badlands) and features several Rogue-centric elements.
Looking for Raid probably won't share a lockout with Normal and Heroic raids.
Looking for Raid gear will be stronger than the new five man heroics, but weaker than normal raids.
Melee classes will be getting a buff that is only active in the new raid to help them compete with ranged classes.
Epic gems will drop in the new raid (likely on Normal and Heroic only).
Northrend will require 2/3rd of the experience it does now, making leveling alts faster.
Sounds pretty neat, those 5 mans sound really good. I do have a few concerns though.
For starters, I do wish they'd improve the quality and feature set of leveling by adding options for veterans like level-matching, group scaling, heroic leveling, etc, rather than just cutting it down further yet again. A shorter mindless slog is still a mindless slog.
I'm also a little annoyed about the new legendaries. Not the weapons themselves, mind you, what bugs me is that high-end questing should not be restricted simply to such a frivolous niche. Legendaries often have these really great, extremely challenging quest lines and the game has badly needed a real system for those since release. I wish they'd expand them into the main game in a big way instead of outright nonsense like daily chores and the embarrassing Thrall questline.
Also, the melee buff sounds like a really sad piece of work. They really need to be fix issues like that with actual thoughtful design that lets the melee players feel genuinely powerful and useful for a change rather than just toss them some pathetic handicap. Blah.