Earlier today Microsoft released the latest CTP, dubbed the Vista Enterprise CTP, to technical beta testers and Enterprise users. It showed up on the beta website, connect.microsoft.com just after 12:30 PM central time.  Currently the beta site is getting hammered by testers trying to download the latest bits.  If you are lucky you will get through and actually be able to download the images at decent speeds. 

For those of you technical beta testing having a hard time trying to download.  I recommend using Firefox and use this direct link to the download. Once you log in, and after a few tries you should be able to get it to work.

Enjoy!