Don't know.  Over the last few years there have been many rumors that she is returning.  But, so far, the last known film was in 2006.  I think the rumors get fueled by a new site popping up that makes her scenes available.  

The rules on TER prohibit me from mentioning sites where she might be contacted.  But, if you do a search you can find them.

I'm going to try and contact her myself.  I saw her a long time ago in NYC... she might remember me, but then again, she might not.  If I hear anything for certain, I'll post it.