In this version Instiki becomes a real Rails application. Besides, we have a new markup option that mixes Textile and Markdown on the same pages.
Besides, there is an automated test suite for the controllers layer, and generally a lot more tests.

Other than that, there are dozens of bug fixes and usability tweaks, but no major new features. Sadly, the file uploads didn’t make it to production yet.

There may be new bugs, too – there is A LOT of new and changed code in there. Proceed with caution, backup your storage before upgrade, etc.