Next week, Per and I will spend three wonderful days to start the initial development of umbraco 3.1 (primarily with focus on the UI re-factoring). But improving umbraco shouldn't be a closed process and with arms wide open we'll invite you to join.
As very initial work, we've created a wish list of stuff we'd like to see added to umbraco 3.x - not necessarily in v3.1 but in the v3.x life cycle. Consider it a work-in-progress roadmap with the most important major updates loosely described.
We hope that you'll read it and give feedback in the comments, but we'll also encourage you to discuss it with your customers/end-users so they could add improvements too. After all, they're the people who use the tool almost everyday. When adding ideas in the comments, please spec them with a couple of sentences in the same style as in the roadmap.
On Tuesday at 19.00 GMT+1 we'll arrange a chat to discuss our ideas as well as the ones submitted in the comments (download as an ICS reminder for Outlook/gCal).
When we've collected all the ideas, we'll arrange a poll for developers and a poll for editors to get an idea on how to prioritize (think Dell Ideastorm).
[1] umbraco 3.x wish list / roadmap (.pdf)
[2] Developer chat reminder file (.ics)