I've stumbled across the documentation for SiteStudio 11g on the Oracle website.
The documentation is more extensive than previous versions. It includes previously undocumented configuration flags, idoc script extensions and services, and custom element form APIs. Some nice gems in there.
It looks like the 10gR4 format for region definitions has become the standard, the 10gR3 and earlier versions are considered "legacy" format. Unfortunately 11g does not look like it will support other scripting languages, rumoured to include PHP, and the pre-existing support of ASP & JSP is still restricted to legacy sites.
In fact, it just looks like the very latest 10gR4 rebranded. But is this a good thing or bad thing? Content Server 11g will require WebLogic and other new infrastructure bits so maybe minimal tinkering to websites is a good idea for now. My favourite gripe, the LinkWizard has not been touched but at least the Contribution Window has dumped the tiny floppy disk icon for a big "Save" button.
The big change is the improved SSPU. Now called "Site Studio Publisher" it is a Content Server component and it can be accessed directly from the Content Server menus. It finally provides the ability to crawl and publish a specific page on demand, rather than the whole site - which contributors can do themselves, right from the page! It has a typical Content Server interface and can support specified custom querystrings in page URLs. It still supports post-crawl filters and post-publish triggers, but best of all, it appears to be compatible with 10gR3.
The SiteStudio documentation can be accessed here: