This site provides a dynamically updated Changelog for the Triton Data Center cloud platform.
The page is generated by parsing the list of releases located at https://us-central.manta.mnx.io/Joyent_Dev/public/SmartDataCenter/, and then looking for a changelog.txt file to extract the commit messages from. Commit hashs are automatically linked to the diffs on GitHub, and bug IDs to their respective page on http://smartos.org/bugview/.
Also, check out this chrome extension to easily browse directories on Manta. It makes browsing SmartOS (and other) releases through Manta very easy.
Source Code: https://github.com/TritonDataCenter/smartos-changelog