How to use Tomcat 8 in Eclipse?

Question

EDIT 2014-02-07: Eclipse Luna is here, and support for Tomcat 8 is included in the bundled WTP : ) Happy days!

Tomcat 8 is still in development, but

Answer 1

This should be a comment under the accepted answer, but I don't have 50 reputation yet.

At http://download.eclipse.org/webtools/downloads/

I first selected Released 3.5.2, which like others did not work for me. Then I picked Integration 3.6.0, and saw Tomcat 8 for New Project of Dynamic Web Project.