[plt-scheme] Low-hanging coding tasks?

On Sat, Mar 08, 2008 at 05:18:10PM -0500, Matthias Felleisen wrote:
> 
> We need a serious functional data structure library, ideally with a  
> performance test suite not just a test suite. Carl Eastlund has been  
> looking for contributors.
> 
> We also need people who are willing to port existing libraries from  
> the untyped world to the typed world. That is, libraries in the srfi  
> and planet world need to be equipped with types. If you are  
> interested, contact Sam Tobin-H.

The typed world?  Has Schene acquired static typing?  Or (more likely)_ 
should I ask just what this is?

-- hendrik