OpenRocket 0.9.2 has been released. This version includes fixes to imperial unit conversions and significant UI improvements to motor selection.
It is recommended that everyone using imperial units upgrade immediately!
OpenRocket version 0.9.1 has been released. This version includes some bug fixes in the file handling (including file saving) and some small improvements in the UI.
At the same time the Master's thesis written concurrenty with OpenRocket is released.
Get them at http://openrocket.sourceforge.net/