I'm not crazy about the Rock Band 4 setlist, but that's okay because I entered Rock Band 3 only knowing 3 songs (Misery Business, Bohemian Rhapsody, and Crazy Train) and left it with my favorite setlist in any music game ever. In fact, I loved it SO much that having my least favorite song of all time (Free Bird) didn't hurt it at all!
Anyway, these are the songs I know from the Rock Band 4 setlist, ranked in how excited I am for them (in order, of course)
OMG YES PARAMORE
Paramore Still Into You
Super Awesomely Excited
The Mighty Mighty Bosstones - The Impression That I Get
Fall Out Boy Centuries
The Killers Somebody Told Me
Very Excited
Mark Ronson ft. Bruno Mars Uptown Funk
Foo Fighters The Feast and the Famine
Cake Short Skirt/Long Jacket
Dream Theater Metropolis, Pt. 1: The Miracle and The Sleeper
Moderately Excited
Aerosmith Toys in the Attic
Rush A Passage to Bangkok
Avenged Sevenfold Hail to the King
The Cure Friday, Im in Love
Fleetwood Mac You Make Loving Fun
4 Non Blondes Whats Up?
Meh
Queens of the Stone Age My God is the Sun
The Who The Seeker
Urgh
Judas Priest Halls of Valhalla
The rest of the songs I either know of the band/artist or never heard of it at all. I'm not listening to them until the game comes out, so I can be experience them for the first time through the magic of Rock Band! Ahhhhhhhhhh soooooo excited