Since we have no root for device, the main advantage for adroid 2.2 will be automated android update. So we will not needed to wait for enTourage updates any longer. We will always have latest updates from google-android.
Also I really hope that camera+bluetooth+battery+flash will work in next release (as promised by enTourage), but I'm afraid that it will be released no faster than in june ( 'cos adobe will present flash for android only in june. There's buzz that beta release is allready awailable to developers, but I wasn't able to get confirmation from developers).