Features of Android 2.2
1. Speed
The Dalvik Virtual Machine has been improved and will now use the
Just
In
Time compiler (JIT). this translates apps into a machine code that's better read and faster by the VM. This will give a 200% to 500% increase in the applications speed.
2. New APIs and services
2.2 will offer Cloud to device messaging. The example given was a user looking up a location at Google maps on a pc, and pushing the location to the device where it was opened in maps with a link to turn by turn directions. Droooool
All apps and their settings are able to be backed up and restored to another handset.
Apps can be stored on the SD card. If a developer chooses, he can have the application stored on the SD card in an encrypted format. This can be cycled on and off by the end user with one click.
WiFi hotspot - don't expect your carrier to allow this one for free.
Support for Adobe Flash 10.1 and Adobe Air. Flash 10.1 beta is included
Improved Exchange server support
Application errors can now be reported directly to the developer through the app.
V8 JavaScript engine support. This new JavaScript engine will make webpages that use js to load and run 2-3 times faster. Google went on record saying the 2.2 browser will be the fastest mobile browser ever.
You can wirelessly stream music from your phone to your computer.
Improved Bluetooth support, including Bluetooth dialing
3. Market updates
You will be able to auto-update any app via a checkbox in the apps market page. If the app's permissions have changed, this setting will be overridden so the user can check the new permissions.
You will be able to select to update all your apps that have an update available. Again, if permissions have changed, this will still require user intervention.
DRM free music will be available for sale in the Android Market.
Official word from HTC:
if your phone was launched this year, we will most likely offer an upgrade for it to the Froyo version. This includes popular models like the Desire and Droid Incredible as well as hotly anticipated phones like the Evo 4G, MyTouch slide and upcoming models. We will announce a full list of phones and dates once we are closer to launching the upgrades. We are working closely with Google and our other partners to ensure we have the earliest access to everything we need to provide a complete and solid Sense experience on Froyo. We expect to release all updates in the second half of this year but can't be more specific yet.
No official word from other manufacturers yet.
Links of our coverage:
http://www.androidcentral.com/adobe-explains-flash-101-android
http://www.androidcentral.com/android-22-froyo-officially-announced
http://www.androidcentral.com/android-22-sdk-available-now
http://www.androidcentral.com/most-2010-htc-android-phones-will-get-froyo-2010
http://www.androidcentral.com/android-stream-your-desktop-music-over-air
http://www.androidcentral.com/no-froyo-just-yet-google-says