This is taken from the Tool website on the 3rd Fed 06,

"Although there are lots of release dates being bandied about, NONE are official as of this posting. However, in all likelihood, the CD will be released sometime in MAY, and hopefully earlier in that month as opposed to later. As soon as the date becomes official (or, as soon as I'm told that it's official) I will post it on the site, and then some of you can respond that it's old news."