Yet another major Ubuntu release is on the anvil. It is called Ubuntu 9.10 codenamed Karmic Koala. There is nothing really to get excited about this new release to be frank. And probably no major changes to the user interface. More here
Canonical had promised major changes to the UI for Ubuntu 8.04 Hardy Heron, but even after two more major releases now, no upgrades have shown up yet. Lets take a look at the list of changes with this new Karmic release.