This modern task manager can be unlocked by creating the TaskUIEnabled key and setting it to 1 under HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\TaskUI
Items in this new task manager is sorted as System-Critical Programs, Background Programs, and actual Applications. Though this task manager is still unstable , but we can expect lots of new changes. It seems Windows 8 is totally different and Microsoft is leaving nothing untouched . Stay tuned .