You'll find the last update for CodeWarrior Palm OS tools, 9.3, here:
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=PALM-OS-9-UPDATES&nodeId=012726006178...
Downloadable updates for all CodeWarrior products are here:
http://www.freescale.com/webapp/sps/site/overview.jsp?nodeId=01272600617882
The 9.3 update included improved support for PNO code generation and debugging.
Marc.