A new package unity-greeter has been uploaded to Oneiric repositories today that gives us a first glimpse of what could be the new Login theme for Ubuntu 11.10.
The greeter theme is not finished but even at this early stage it looks really good. Everything is aligned to the left and the panel at the top has been squeezed into the top right corner. Also, the theme is not set as a default Login theme as of now. Check out the video below: