A new version of xperf/WPT (Windows Performance Toolkit) is now available. It’s actually been available for a few months, but I wasn’t paying attention. This version comes in the Windows 8 Software Development Kit. It has some subtle and some significant improvements, and it looks like all xperf users should upgrade.
This post is obsolete. There have been a few versions of WPT since this was written. You can always get the latest version by getting UIforETW, described here.
The good news is that existing batch files and trace analysis techniques still work. The better news is that there are new graphs, a new analysis tool (wpa.exe), a UI for recording traces (wprui.exe), and other nice features.
Go get it now!