We haven't opened this up yet, but some broader design goals have been added to the Ros on Windows Proposal page.
Catkin upgrade for mingw.
Python create-pkg tools - winros_create_xxx_pkg for cpp, py, msg.
Python workspace tools - winros_init_workspace, winros_init_build, winros_make.
Replacement for rosrun
Catkin upgrade for msvc sdk 7.1 - port big changes to catkin, upgrade rosdeps.
Catkin for mingw
Catkin for msvc
Msvc sdk for non-ros style development
Ports - ros, ros_comm, genxxx, actionlib
Roscd environment - on hold.
Standalone msvc message generators
Ports - tf, and diagnostic tools - on hold.
Mingw support for Qt via qt_ros
- CMake generator support for visual studio and express - on hold.
Cmake build environment with rosbuild2
Port ros/ros_comm to the visual studio compiler