From the project's home page:
[11.09.07] Scythe is going open-source!
Scythe is now an open-source project. Sometime this week it will appear on sourceforge and be available by CVS. I can no longer afford to spend much time on Scythe and am moving onto a game project, so I am handing its future to the community.
[11.09.07] Scythe 1.14 update
Small update. Most notably removes the requirement to save scenes in the root directory, and all features are now free to all users.