Paul was reportedly going to start working on the debugger after releasing the new IDE months ago. However the Steam launch presumably consumed a lot of that time, but has proven successful so I trust TGC will be working to get the debugger and additional 3D commands added on short notice next year.
Quote: "What does it need a debugger, and what should it do?"
A debugger was on the list of new features from the Kickstarter and would really complete the nice new IDE for Tier 1. If it could behave like Visual Studio / XCode and others, we would then be able to set breakpoints or tracepoints and monitor code execution line-by-line. A definite time saver when troubleshooting or validating a particular function.