I’m in the Atlassian San Francisco office for the next three weeks, and being too jet-lagged to deal with _real_ work for the first day, I decided to have a go at a couple of outstanding issues with user macros. In Confluence 2.3 you will be able to specify if you want the body of your macro pre-rendered from wiki text, and you can also create user macros that _produce_ wiki text, to be rendered to HTML afterwards.
Not tremendously exciting features, I suppose, but after spending twelve hours on a plane yesterday, my brain wasn’t capable of much more. One neat thing you can do with the new code, is create a user macro that shows you what HTML is produced from particular wiki markup.

Confluence 2.3 Sneak Peek – User Macros