IDLE Reimagined is the code name for a redesign for Python's default IDLE editor with focus as an educational tool.
IR is currently in the planning phases.
The wiki is at https://github.com/asweigart/idle-reimagined/wiki
The mailing list is at https://groups.google.com/forum/#!forum/idle-reimagined
Contact Al Sweigart if you'd like to get involved! al@inventwithpython.com.