New Features of Google Analaytics The features of the old Google Analytics was somewhat limited for advanced tracking. Which is why many users (especially big organizations) spends money on other paid web analytics service like Omniture. Some of the new exciting features of Google Analytics are: 1. Auto User Interface refresh 2. Google AdSense can be now be integrated into Google Analytics 3. Advanced visualizations such as Motion Charts is now available 4. Make Custom Reports 5. Advanced Segmentation Options 6. The Google Analytics API. 7. Automatic importing of AdWords cost data into Urchin. The two public beta features that I was given access to are - Advanced Segmentation & Custom Reports. The rest of the features are still in private beta and only available upon invitation. Got the info from here http://www.saadkamal.com/google/a-sneak-peek-at-new-google-analytics/
I like the new features they're pretty helpful and look awesome. I love analytics to have all my sites on one place.
Your site may have little traffic and this may not apply to you but for some sites out there, processing the access data and presenting it would be so resource intensive (CPU, memory, etc.) that it would not make any business sense for Google to do so. If you want real time statistics, you should install your own Urchin instance, etc.
I am VERY excited about the google adsense integration... cant wait any word on when it will be released...dont say it already has because i dont see it