In addition to Flash and improving the speed of the system , according to the TechCrunch blog in Android 2.2, right out of the box, you will be able to use the phone as a modem, including via Wi-Fi. Let me remind you that now for such functionality it is necessary to install third-party applications, and Wi-Fi tethering is generally available only after receiving root access.
Given all this, Froyo is starting to look like a very appetizing release. It remains only to wait for May 19, when the system will be officially demonstrated on Google I / O.