And to illustrate this point, below is a side-by-side of the same game on the same device, with the one running 2.2 running quite a lot faster than the one with 2.1. Live Updating
Also, a number of Enterprise Exchange features.
There’s also a Cloud-messaging feature, so you can, for example, send navigation directions from Google Maps from your computer to the GMaps on your Android. Another example: Reading an article from the desktop, then stopping and sending it to the device for later pickup.
Tethering! Portable hotspot! To demonstrate, they show Android hotspotting a Wi-Fi only iPad.
V8 for Android’s browser, which brings 2-3x performance boost. And this demo, they show a 2.1 Android, a 2.2 Android and an iPad. And they claim Froyo is the world’s fastest mobile browser.
2.2 also has access to the compass in the browser, in order to reorient the page according to your orientation. The camera is also accessible in the browser too.
They’re also stressing their voice recognition for search.
Also, voice recognition plugged into Google Translate plugged into text to speech makes for an immediate speech to speech translator.
More app features: Searching apps, moving apps to your SD card, searching inside apps and updating all apps simultaneously (or auto-update).
And for devs, a bug reporting tool when an app crashes that shows the entire stack trace for devs to figure out what went wrong.