Seal has been tested on Gentoo and Ubuntu. Although we haven’t tested it on other Linux distributions, we expect Seal to work on them as well. Platforms other than Linux are currently not supported.
We’re a bit behind on our release schedule, so the latest official release has become a bit dated. We currently recommend you compile Seal from the master (stable) development branch:
git clone git://git.code.sf.net/p/biodoop-seal/code biodoop-seal-code
Don’t forget to also build the docs (the ones online are for versione 0.3).
If you prefer to use the official release you can download it from here: http://sourceforge.net/projects/biodoop-seal/files/.
And then, see the deployment instructions/suggestions in the section Installation - Deploying.
There is no particular upgrade procedure (but see the notes below). Just build and deploy Seal following the instructions in the section above.
Make sure you copy any custom property settings from the old launcher scripts under bin/ into a Seal configuration file.