Forum members are reporting numerous new features that have been released within Google Analytics. Right now, you can compare data points like this:
You can use this to compare date ranges, though the wording doesn't quite fit (you're not comparing to site and cannot do so as far as I can tell).
Additionally, you can compare two metrics:
I'm trying to keep track of everything that is happening within Google Analytics and they're moving faster than I am. But that's a great thing and the new features make the analytics package a lot more rich which is terrific for a free system.
Update: Google has confirmed these Analytics graphing tools and also informs us that Google Analytics now supports six new languages: Thai, Filipino, Indonesian, Czech, Hungarian, and Portuguese.