With 8.10 comes GNOME 2.24, which just got released a few days ago. (If you're confused, this is how GNOME works: Every even number release is final. Every odd number release is testing. Ex. GNOME 2.23 is testing for GNOME 2.24. It's another way of calling GNOME 2.24 alpha x, beta x, RC x.)
GNOME 2.24 is a big improvement over GNOME 2.22. (Duh.)
Another exciting thing is that many of GNOME (and Ubuntu's) default applications are making their move to GIO/GVFS for back-ends, which will improve performance and fix technical issues. Eye of GNOME (Image Viewer) is moving, so is File Roller (Archive Manager,) Gedit (Text Editor,) and GNOME Control Center (Control Center.) Wait, there's more, three more!: GNOME Media, Baobab (Disk Usage Analyzer,) and Totem (Movie Player!)
See also my article Exit Strategy, which is another project for GNOME 2.24 that will enhance logging off/shutting down from your computer.