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The servlet container can be either Tomcat 6.0.18 or Jetty 7?  The Tomcat artifact Geronimo uses contains patches applied on top of the Tomcat 6.0.18 version.

According to the summary presented here:

Tomcat Releases

The Tomcat plan is for a 7.0.x release that supports the Servlet 3.0 specification to be available as soon as the Servlet 3.0 spec finalizes.  This chart has an interesting note that this will support JSP 2.1 because there is no JSP 2.2.

For Jetty, there is a similar project plan for an 8.0.x version also planned at the time Servlet 3.0 goes final.

Status of JEE6 Activity

Unknown.  In the Tomcat community, this appears to have been discussed, but is not really under active development.  The Jetty community seems to be tracking the Servlet 3.0 activity a little more closely, but I've not found any projections for availability. 

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I've not been able to locate many signs of activity on this. 

Additional Notes

There's something bizarre going on with this spec and the Expression Language one.  The Tomcat release plan indicates there is no JSP 2.2 version.  There don't appear to be any JSP 2.2 specifications that can be located, and there are no JSRs at the Sun Java web site related to a JSP 2.2 release.  The only references I've managed to find have been a couple of indicators that Glassfish is supporting JSP 2.2, but there don't appear to be any details on what this actually is. 

Component:  Expression Language (EL) 2.2

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