My Motorola Milestone is still stuck with Android 2.1, even though the US version, the Droid got the 2.2 update months ago and that update was promised for Milestone in Europe an equally long time ago.
The main improvements in 2.2 are installing apps to SD in stead of internal memory, something I desperately need, since I am getting the "Low on space" warning and there aren't any apps I can or want to remove.