It's been quite a while since the TuxOnIce website was updated, but the patch hasn't fallen into disrepair. It has been quietly maintained at Nigel's account on Github, together with the Userui and Hibernate script packages.

Now, Nigel has begun work toward a 4.0 release. The major new functionality in this release will be support for incremental images. The idea is that you hibernate once, per normal. When that cycle resumes, the image is retained and the kernel starts tracking which pages of memory have changed since the image was written. Then, when you next want to hibernate, a much smaller 'incremental' image is written and you power down much sooner. Speed in writing the image is not the sole advantage, however. Perhaps more importantly, you'll also get less wear and tear on your storage device, aiding its longevity. The new functionality is still being written, but watch out for betas (Lord willing!) in the near future!