There's a Zune HD firmware update that has just been released - it will take your Zune HD from 4.1 to 4.3...I don't know why they skipped 4.2, nor do I know what this firmware update adds or fixes. There's no information about this firmware update at Zune Insider. My Zune HD didn't automatically detect the new firmware update - I had to go into Settings > Device > Player Update in order to get it. It installed without a hitch, but I don't know what's been changed. If anyone has any information, please share!