The geniuses at XDA-Developers are busy at work porting Android 2.2 (Froyo) to other Android devices. These are operational ports, but not everything works, so you may want to wait a bit longer before making the switch. So far we’re seeing it on the Desire, G1, and myTouch 3G. Here’s a round up of what works and what doesn’t. On the Desire:

What’s working:

- WiFi

- Data

- MIC

- GPS

- Apps2SD (use latest 0.2 version)

What doesn’t work:

- Bluetooth (does start, but you can’t scan)

- Camera (please don’t use)

And on the G1 and myTouch 3G:

Working:

- Calls

- Data

- LEDs

- Call audio

- Gapps

- Notification bar fixed

Broken:

- Wifi

- Camera

- GPS

- Default wallpaper (You can change wallpaper)

- External audio

- DONT INSTALL FLASH! BROWSER WILL CRASH! Fix coming soon

(via: AddictiveTips)