Internet chat and telephony company Nimbuzz has launched a new version of its Android app, with support for higher quality Nimbuzz to Nimbuzz audio calls. Nimbuzz calls the new feature “HD voice quality,” which is really just a way of saying that the audio quality should sound much better… Nimbuzz doesn’t really explain what it means by high definition. You can make HD voice casls over WiFi or 3G.

Instead of routing calls through Nimbuzz servers, the app now makes a peer to peer connection between your phone and the phone of the person you’re calling, and auto-detects your network speed to determine if HD calls are possible.
The new app also also lets you install the app on your SD card if you’re using Android 2.2 and up. The profile page has been refined to make it easy to update your status, connect to social networks, download avatars, or pay for Nimbuzz credit to make low cost calls to international phone numbers.
Nimbuzz is also available for iPhone, Symbian, and PC, but those apps don’t yet have the HD voice calling features.
Nimbuzz 2.0.2 for Android is available as a free download from the Android Market.