I just installed the latest development version of Ubuntu 13.10 Beta 2 on my Virtualbox. Here are some screenshots of Ubuntu 13.10 Beta 2. There seems not many interface upgrade compared to previous Ubuntu 13.04 version.
Ubuntu 13.10 Beta 2 Desktop
Ubuntu Software Center
Ubuntu 13.10 Beta 2 promises a lot of improvements on technical side but not in the user interface. The Ubuntu Unity still dominate overall user experiences and honestly, I hate it.