Today, and finally, Sun decided to post a list of all technologies used in the Java EE along with its specifications' URLs and versions. I am really glad that they finally did that.
Latest Java EE release with its technologies and specifications numbers is here (for the time of this post, it is Java EE 5).
For the time of this post, Java EE 6 technologies preview page.
To know why I am really happy with this list, check this link here for Java EE 5 technology.