Samsung has finally released android 2.2 froyo for the Epic 4G. The build version is EB13. Though the android 2.2 froyo update for the Samsung Epic 4G was expected to be released OTA, the authorities have released it as a file that could be download and then updated.
The Android 2.2 EB13 update for the Epic 4G brings battery life improvements, better performance, 10.1 Flash support, bug fixes etc to the phone. Before downloading and updating your Epic 4G to Android 2.2 Froyo, it is better to take a backup of your device.
Download Samsung Epic 4G Android 2.2 EB13 build from here