No, currently no plans for it, but there are some good news...
One of the major reason pydev has no navigator is that eclipse still does not provide a way to do it easily, you'd have to create it from ground up, with the TreeViewer, etc.
Now, it appears that version 3.2 will have a commom base for creating it...
So, I decided to google for "eclipse Common Navigator" and got some nice results, which I'm posting to remind me of checking them once the Eclipse 3.2 final is released (and based on this results, I believe that the package explorer will be available shortly after that final release of Eclipse 3.2).
A good example on how to use this api can be found at: