I've been silent for a long time, but am getting ready to do a real release of my curve editing tools.
In the meantime, under the philosophy of "release early, release often," there's a very rough release up at the new Spiro page, as well as a darcs repository. Brave souls are encouraged to try it out, and of course patches are welcome (it's all GPL).
The timing is, coincidentally, in time for Dave Crossland's talk at LGM. He will be doing a demo, and is encouraging people to integrate the core technology with other projects like Inkscape.
If I am oddly quiet and rudely unresponsive, it is because I am trying to finish my PhD thesis - I really want to get a draft to my readers by May 21, which is of course very soon. Fortunately, I have a lot of it done. Even so, my goal is to spend most days doing nothing but writing and drawing figures.
Thanks for your understanding.