The HTC Wildfire S has recently gotten the Android 2.3.5 update, posing a brand new lockscreen with customizable icons and performance improvements, which is great as low end smartphones need as much speed as possible. If you are a HTC Wildfire S user, you should be getting the update soon. People on Three UK have gotten the update, such as myself - and many others on the XDA Developers HTC Wildfire S forum.
Unfortunately, the Android 2.3.5 update does not come with Sense 3.0 UI, it stays with the 2.1 UI. And for the original Wildfire users, it looks like you will be staying with Froyo 2.2 for the moment. I will be posting a video up soon showing you the Android 2.3.5 features, stay tuned for that. :D