What is Zune?
Apparently it will be a new portable media player from Microsoft to tackle the iPod. There are already pictures of the prototype, and the official news about it will not be released just yet - and it is meant to be available for Christmas! It is meant to be a community device (this means sharing), and also will be WiFi activated!
Apparently, Microsoft want you to upgrade to the new Zune, and will allow you to download all your previosuly downloaded tracks from iTunes Music Store for free. Any news songs will have to be purchased, of course.
View this webpage: http://comingzune.com - It's weird, so you might also wanna take a look at the Zune Insider Blog - check the older blogs for more relative news
You might want to find out more news here: http://en.wikipedia.org/wiki/Microsoft_Zune
All I can say is that more details will be coming Zune...!