Realms are all red again, can't login

If you restart your client, you should get a small patch, and all should be well.

Red realms means your client and the realm aren't on the same version.

If the patch isn't downloading, it's quite likely a security program or something blocking.

For those situations, you may want to pursue the issue over in Tech Support.

Or what Pahanda said :)

Seriously folks, they JUST put this up, it may take a few minutes. Tested this on my client - first time, got an error, second attempt it came through.