\doabstract{The Lua\TeX\ project: Halfway to version 1} {Hans Hagen} {We're close to releasing version 0.50 of Lua\TeX. What's old (and stable), what's new (and experimental) and what is on the agenda (but can get off). In this talk I will give an overview of what has happened so far, what is currently being done and where we expect to end up. If time permits, I'll also do a quick update on the \acro{MP}lib project.}