Take a look at Mirror's Edge's upcoming demoAccording to a transcript from the Insider program at IGN, Rock Band 2 will be capable of downloading the set list from the original title free of charge. This is on top of having the ability to redownload all of the content you've previously paid for from the previous installment. For those of you wondering what the set list for Rock Band 2 will bring, you'll have to continue to wait as only rumors have been circulating the title thus far.
As for the release date? That's still unknown as the PlayStation 3 format has still yet to receive anything concrete. Hopefully Harmonix will be willing to let us in on that come E3.
UPDATE:
IGN has since issued the following statement: "Nate (the originator of the above quote) goofed in writing that. He hopes that is allowed. Nothing about this has been announced and Nate's never even seen RB2. Sorry, guys."

wow sounds awsome
#1
Of course it will, this is Harmonix! the one who does care about more than money...
I might pick this is up when it finally hits
at #3 its EA also lol
just releast the 1st one in europe on somethign other then the 360 ffs, how hard is it, releasing a new ne b4 we even get the 1st will bet lame :P
i never actually got the 1st one (friend of mine did but i never did)
this might actually make me get the 2nd one
all of the tracks from the 1st game & all of the tracks from the 2nd game
plus DLC from both games = WIN
#6 yeah youre probaly right... really didnt think my comment through, the money part was actually not the point, just that harmonix will definetly support the old controllers as well as 3rd party ones
unlock Guitar hero who releases new editions just to get your money.. RB2 is putting in user requested features. Why don't you wait to see everything that they're adding before whining.
Whoa, you can play the songs from the original game (not DLC) in RB2, is that what you're telling me, Mr. Wales?
Harmonix knows how to create brand loyalty just like SONY.Backwards compatibility always kicks ass
Too bad I'm buying Guitar Hero 4 for the better drumset.
Unfortunately they goofed up on reported that. There is no official word as of yet that you will be able to DL Rock Band 1 songs onto Rock Band 2 for free. Just about everyone is hoping for it to happen, but we will have to wait till E3
As far as the set list rumors: http://www.joystiq.com/2008/07/06/rumor-rock-band-2-setlist-leak-uncovered-by-two-sources/
I'm buying Rockband 2 for the better.... EVERYTHING.
They may be saying you candownload the on disk music form the first game into the second one. Because they keep saying the new game will have new features in regards to music so why not let you use those features with the old songs. As for Cross compatability with DLC that simply rocks regardless of anything else they do.
they should put a co op battlemode for online. like guitar and drums vs another guitar and drums for a higher score cause thats would be awsome.
@6
I have a feeling they didn't want to, but GH:WT pressured them to make another one.
@13
Too bad you haven't seen RB2's drums yet. Don't come to any conclusions yet.
I'm getting GH4 simply for the new drumset, I need more difficulty and an extra pad may be just what I need, but now it looks as though I will be getting RB2 when it comes out as well, I am proud to support developers who are trying really hard to give the people what they want.
Them making another Rock Band this quickly is why I don't buy music games with the exception of DDR. They just came out with the first one not too long ago, and if I was a betting man 1 million dollars says that Rock Band 2 will have the same graphics as the first one with just different downloadable songs and a different modes that they could of done in the first one.
Well that sucks, what a plonker writing about a game he has never seen.
And, jeez, Rock Band 1 is only just out, and we're already talking abut Rock Band 2? The first ine had like, no good songs on it.
Ah, dammit. =/