Folks with Windows 7 build 6801 were disappointed when they didnt get to see the new super task bar which they saw at PDC 2008.
withinwindows.com, has uncovered how to bring this breakthrough feature and is available to anyone who has Windows 7 build 6801.
Although a newer-looking Taskbar is present, it’s not exactly what you saw at PDC ‘08. For example, the Quicklaunch toolbar still exists, Aero Peek doesn’t work properly, and Jumplists are stale. This is likely why it wasn’t enabled, out of the box, so set your expectations accordingly.