Google analytics is probably the best free analytics tool ever, and they are adding a ton of new features.

Here's a link to the original post:
http://analytics.blogspot.com/2008/10/more-enterprise-class-features-added-to.html

Summary:

• Custom Reporting - Drag and drop interface to create a report.
  
• Data Export API - API to extend the uses of report data for use outside of the system.
  
• Motion Charts - Ability to select x-axis, y-axis and bubble size/color to view how metrics perform over time.
  
• AdSense Reporting - track AdSense with GA (link: http://adsense.blogspot.com/2008/10/make-date-with-data-in-google-analytics.html)
  
• Advanced Segmentation - Analyze subsets of traffic, cr
  
• Updated GUI and Admin interface - Easier management of multiple accounts

The link above has tons of screenshots and videos showing all of the features.

The overall best looking feature is the GUI itself. It look very sharp. Custom reporting will be another excellent feature (hopefully helping ot avoid customizing everything in Excel!).

Also, for many bloggers and Internet marketers, the AdSense tracking will be crucial. You can measure visitor activity, and discover numerous points of useful data.

These features should be available to everyone very soon. Check it out!

Thanks,

Anthony Latona