Latest Version: pre001.2
StepMania 5 Tournament Edition (SM5TE) is a modified version of StepMania 5 currently meant for "legit" scoring. (There are other plans, but I won't divulge them at this time.) To that end, the scoring system has been replaced with MIGS (Marvelous Incorporated Grading System), and Marvelous has been forced on. (Sorry, Pump players.)
The changelog is available if you want to go in-depth.
I am open to suggestions about the theme (aside from "replace it with SMMAX"). I designed the gameplay screen based off of SMMAX in order to stop this suggestion before it starts. ;)
(now outdated) preview video