Not at this time, but why don't you just look at the org.jboss.seam.drools package and re-implement the same thing for JESS. Should be really easy :-)
You could even publish this code on the Wiki for other users :)
The code example here is helpful: http://weblog.infoworld.com/tcdaily/archives/2006/11/review_extra_je.html
However at this time things like backward chaining (there is a bit backward chaining in order to reach goals for things like cashflow optimization in my Jess script) and shadow facts are still on drool's "roadmap" page. Now I'm looking into the source code of org.jboss.seam.drools package and Jess's source code. Maybe I'll want to write a similar package for integration of Jess and Seam. But not sure.