The first alpha of Ubuntu 10.10 Maverick Meerkat is now available for download.The different variants of Ubuntu like Kubuntu, Xubuntu etc. are also in Alpha 1 and available for download as well. So, here is the complete list of download links:

Ubuntu

http://cdimage.ubuntu.com/releases/maverick/alpha-1/

Ubuntu Server for UEC and EC2

http://uec-images.ubuntu.com/releases/maverick/alpha-1/

Kubuntu

http://cdimage.ubuntu.com/kubuntu/releases/maverick/alpha-1/

Xubuntu

http://cdimage.ubuntu.com/xubuntu/releases/maverick/alpha-1/

Ubuntu Studio

http://cdimage.ubuntu.com/ubuntustudio/releases/maverick/alpha-1/

Warning: This is an Alpha version meant for testing and should not be used in a production machine.