I'm kind of skeptical at this rumored keyboard peripheral. Does it have more than 5 keys? If it's got more (maybe 2 octaves worth (14 keys)?) How do you display all those notes that and on higher levels that's pretty much really playing a keyboard.  
 
Also, will I get free upgrades to songs that I already have that should have keyboard in them? Will they be re-released and you have to pay again or just a partial fee if you already own it?
 
I guess we'll find out at E3.