Google has unveiled Android 2.2, an update to its open platform for mobile devices that offers new features for consumers including portable hotspot functionality, support for Adobe Flash within the Android Browser and improvements to Android Market.

Google said that the updated version of Android offer new tools and options for developers including performance and speed enhancements, new enterprise capabilities, addition of the V8 Javascript engine to the Android browser, and a new set of APIs and services.

The company also offered a preview of an upcoming web-based version of Android Market and an update to the native Music app, which will allow users to access their music from Android-based handsets.

Andy Rubin, vice present for engineering at Google, said: “The growth of the Android ecosystem continues to exceed our expectations. Every day, 100,000 new people start using Android-based handsets.

“There are now more than 180,000 active Android developers who have contributed over 50,000 apps to the Android Market. Froyo is another step toward making Android an even better platform for developers, enterprises and consumers.”

Developers can download the Android 2.2 SDK and Android NDK, Revision 4 now from the Android developer site. Froyo is expected to be available to OEMs and the open source community in the coming weeks.