plugin pooling?

Looking at this page (http://www.jspwiki.org/wiki/PluginDevelopment) it
appears plugins are re-instantiated for every call as opposed to pooled or
even treated as singletons.

Any change this is going to change in the future? It could impact how some
of my in-house plugins work (using member variables vs. thread locals,
etc.).

Just checking :)

--
Bobman