It's up on Blizzard's site now:

http://www.worldofwarcraft.com/burningcrusade/

There's an FAQ too.

http://www.worldofwarcraft.com/burningcrusade/faq.html

The contents of the FAQ:
Q: What does the title of the World of Warcraft expansion refer to?
A: "The Burning Crusade" refers to the Burning Legion's ongoing efforts to destroy life on Azeroth. To date, the Burning Legion's exploits have been documented in Warcraft III and in our War of the Ancients novel trilogy. As part of World of Warcraft: The Burning Crusade, players will now be able to travel through the Dark Portal to confront the Legion on otherworldly battlefields.

Q: What are the new races? When will you reveal all of them?
A: The first new race that we have announced for the expansion set is the Blood Elf race. No longer trusted by the Alliance, these former High Elves have joined the Horde to hunt down the demons that destroyed their homeland of Quel'Thalas. We plan to unveil details about possible additional races at a later date.

Q: Will the level cap be raised?
A: Yes, the level cap will be raised to 70 from the current maximum level of 60. In addition to the level increase, every class will gain access to additional talents and abilities or spells as they level up from level 60 to level 70.

Q: Will there be new lands to explore in the expansion?
A: The Outlands will be opened with the expansion. Players last visited the Outlands in Warcraft III: The Frozen Throne, alongside Illidan as he conquered the Pit Lord Magtheridon's domain. Players will also gain access to Quel'Thalas, the region to the northeast of the Forsaken lands, where the Blood Elves reside. Other areas that players will be able to explore in the expansion set will be revealed in the months ahead.

Q: Will there be new dungeons and battlegrounds included in the expansion?
A: We do have plans to add dungeons and battlegrounds with the expansion, though the exact number has not yet been determined. One upcoming dungeon that we're excited about is Karazhan, which is located within Medivh's tower. Because Medivh has played such a central role in Warcraft lore, we think that a lot of longtime players will be especially interested in seeing what Karazhan contains. As an example of a battleground that will be included in the expansion, we plan on making some of the battles from the past accessible through the Caverns of Time. We'll provide more details as we get closer to implementing this content.

Q: What are some of the other features of the expansion?
A: In addition to the new races, zones, dungeons, and battlegrounds, we have a number of new features planned for the Burning Crusade expansion. Some of those new features include:

* A complete new profession - Jewelcrafting
* Socketed Items
* Flying mounts

We'll reveal additional expansion features in the months ahead.

Q: Do you need to own the expansion to play with friends who have it?
A: There will be many aspects of the expansion that are available to all players. However, in order to experience certain content, such as the Outlands, or be able to play as one of the new races, players will have to purchase the expansion.

Q: Will there be a public beta test of the expansion?
A: We have not yet determined whether we will hold a public beta test for the expansion. If we decide to conduct a beta test, we will post details on the official World of Warcraft website.

Q: When will the expansion be released? How much will it cost?
A: We have not yet announced a release date for the expansion set. However, we expect to announce further details, including the release date and price, on our community website in the months ahead. Please stay tuned to www.WorldofWarcraft.com for more information.

Q: Can we download the expansion online, or must we purchase it in a store?
A: We're still looking into how the expansion will be distributed in each region and will provide more info on that at a later date.

Q: What are the system requirements?
A: The system requirements remain the same as for the original World of Warcraft game.

Windows® System 98/ME/2000/XP OS:
o 800 MHz or higher CPU
o 256 MB or more of RAM
o 32 MB 3D graphics card with hardware transform and lighting, such as GeForce 2 or better
o 4 GB or more of available hard drive space
o DirectX® 9.0c or above
o A 56k or higher modem with an Internet connection
o 4x CD-ROM drive

Mac® System OS X 10.3.5 OS or newer:
o 933 MHz or higher G4 or G5 processor
o 512 MB RAM or higher; DDR RAM recommended
o ATI or NVIDIA video hardware with 32 MB VRAM or more
o 4 GB or more of available hard drive space
o 56k or higher modem with an Internet connection
o 4x CD-ROM drive

Q: Will the expansion be released globally at the same time?
A: We will make every effort to release the expansion simultaneously worldwide. More details on this will follow at a later date.

Q: What is the ESRB rating for the expansion?
A: World of Warcraft: The Burning Crusade has not yet been rated by the ESRB. However, we expect that it will receive the same rating that the original World of Warcraft received - "Teen."

*waits for news on the Alliance race*

Anyone here really excel at Warcraft lore? If so I would imagine you could deduce what the alliance race might be. Of course I could be wrong (usually am, heh) and Blizz may end up blindsiding us with a tangent to the storyline which will introduce a new race. *shrug I will admit, my curiosity is sparked.

Hmmm are not there some Blood Elfs hanging around in Azshara?

The Naga were the next closest thing to a playable race in Frozen Throne, but wouldn't make sense on Alliance

On the WoW main boards someone had a link to an online store that was selling the game and it said it would be released May 1st. Assuming that is even in the ball park range of being true, I'm surprised.

I'm not surprised from the point of view of we all know Blizzard takes forever to make things, but this game is in dire need of expansion like yesterday. Most people I know in game love it but seem to feel that it is too small and cramped, that's the "most missed thing" about EQ from what I can tell, EQ's more epic size. I try to explain well EQ had 5 years of expansions to get that big but I don't think WoW can wait 5 years, it needs to expand now.

EbGames (http://www.ebgames.com/ebx/product/259896.asp?site=NLF1101) has it slated for 7/2/2006, but that doesn't really mean anything, they are frequently way off.

World of Warcraft, as a world, is actually MUCH bigger than EQ, Kunark and Velious combined. Hell, it could even be bigger with PoP in the loops (but that's stretching it).

The size of the world isn't the reason why WoW seriously needs an expansion like yesterday, it's the speed of advancements. When you advance as fast as you do in WoW (like 2x the speed of EQ) you need to release content faster to compensate.

Making the world bigger tends to dilute the content rather than improve things. As the world in EQ got bigger I started to feel a bit disconnected from some of the rest of the content. Eventually I guess someday there will be content added that will make people forget about areas like Silverpine Forest, Darkshire, Redridge, Wetlands etc....and only the old timers will remember them =/

Most people I know in game love it but seem to feel that it is too small and cramped, that's the "most missed thing" about EQ from what I can tell, EQ's more epic size. I try to explain well EQ had 5 years of expansions to get that big but I don't think WoW can wait 5 years, it needs to expand now.
I urge anyone to WALK, don't run or use flight paths (boats are a necessity however), anywhere in the game. Then report back to how small you feel the size of the world is. Just remember, this is the initial game. One can not compare all of EQ to WoW version 1.
As the world in EQ got bigger I started to feel a bit disconnected from some of the rest of the content. Eventually I guess someday there will be content added that will make people forget about areas like Silverpine Forest, Darkshire, Redridge, Wetlands etc....and only the old timers will remember them =/
By the time I stopped playing EQ (the advent of WoW), any zone that was not part of the "desired" powerleveling path or LDoNs was vacant. Fortunately for WoW, questing is still for the most part the fastest way to gain xp while leveling. And if you follow the quests, you will just naturally be taken to most zones in the game. The only difference is whether you start as horde or alliance.

Just my humble opinions.