Looks like it's going to have some pretty sizable improvements.
Cliffs:
*Faster
*More battery efficient
*Devices with more than 256MB of ram will have all of their ram usable(256MB was the previous limit for Android)
*Might come out in May for both the N1 and Droid.
http://androidandme.com/2010/04/news/android-2-2-is-coming-what-features-do-you-want/
http://androidandme.com/2010/02/news/jit-compiler-coming-to-android-sooner-than-you-think/
Cliffs:
*Faster
*More battery efficient
*Devices with more than 256MB of ram will have all of their ram usable(256MB was the previous limit for Android)
*Might come out in May for both the N1 and Droid.
http://androidandme.com/2010/04/news/android-2-2-is-coming-what-features-do-you-want/
http://androidandme.com/2010/02/news/jit-compiler-coming-to-android-sooner-than-you-think/