As promised the system for requesting a Beta key is in place.

If you are an author on WowAce.com, order your key here.
If you are an author on CurseForge.com, order your key here.

We'll be getting keys out to people as soon as we can, and just a reminder you must be an active WoW author to receive one of these keys. We'll be manually verifying eligibility as well.

Note: if you see a message about and error when placing your order, please just try again.

UPDATE:

Quote from Kaelten's comment:

We'll be also tightening up our distribution policies.

Going forward, anyone who wants to sign up for a key must have a certain minimum threshold for the popularity of their addons in order to be approved. We'll be using the same metrics as we do for the rewards program for this, although you don't have to be signed up for the rewards program to be considered.

We are leaving it open to new users, however, by default you'll have to wait until your addon reaches the threshold of popularity before you're eligible. Also, at this point we're leaving the giveaway open to team members on addons, not just the manager.

UPDATE 7-22:

Quote from from Kaelten's comment:

I'm about to start sending out the new batch of keys. However, there is currently an issue were EU players cannot redeem them. We've been told that there is a fix coming soon. As soon as I receive word that these work for EU players I'll post another update here.

Update to the update: It turns out that at least some US players are _also_ having the issue redeeming keys. I'm going to keep handing them out though as I've been told that they should work in the near future.

Update 7-23:

Quote:

Please be aware that we are having issues with players being able to claim Cataclysm beta keys currently for all regions. We are looking into this issue and will hopefully have a better update before the end of our day today. If you have given keys out to anyone, please have them hold on to them. The keys are not the problem and it seems to be an issue within the battle.net system. We’ll let you all know once this issue is resolved.

So the keys are good, we just have to wait it out. Good thing being teased makes it all the better in the end... right?

Thanks for understanding guys, and have a good one.

Update 7-26:

Looks like the keys are working now. Enjoy the beta.