We don't have every feature we're working on listed (some are secret!) and we often throw in random goodies, but this list should give a pretty good idea of what we're up to (note - just because something is medium term doesn't mean we're not currently working on it)
Updated 8/29/08
Coming soon (short term - in no particular order):
- Fixes for certain kinds of redirected home folders (e.g. in corporate environments)
- Improved progress status
- Fix for tray icon occasionally getting 'stuck' syncing in Windows
- Support for bulk operations on web interface - i.e. bulk purge files/folders, renames, moves etc.
- Better support for one-off file shares (with expiration, etc.)
- Landing pages for public links
- Fixes to non-admin install on Windows
Coming soon (medium term):
- Watch any folder (i.e. sync any folder)/better sync options
- User specified ignore list (by file type)
- File search on the web interface
- Better handling of audio/video files on web interface
- Better shared folder controls
Hope this gives you an idea of what we're addressing -- feel free to post new threads about other feature requests.

Trevor S.