The lone Android device on Vodafone has now been confirmed to get Android 2.1 by HTC. This low end Android device features HTC's Sense UI and has the smallest screen on any Android device (and it is resistive).
In a statement released by HTC:
"Kindly note that now we understand that a phone running Android OS 2.1 is available that you are excited to get an update for your Tattoo. We are still working hard to Sense for building this new version but we expect to have the upgrade finished and ready to go soon. Please understand that it takes time to customize any Android release to Ensure You Have The Sense provides intuitive experience, and we hope you can be patient for just a little while longer."
All these 2.1 announcements are good but I am ready to see them on the devices rather than just talk about it coming.