Yep, it's finally there.

The newest Second Life viewer is NOW available for download, so get it whilst it's hot!
http://www.destructivelabs.net

Don't take my word for it, take a peek at the features list for yourselves!
http://www.destructivelabs.net/wiki/index.php?title=Nano_Feature_List

Many, Many more awesome features will be added along the way so stay tuned!