HMX has nailed down the art of not providing information. It's what they DON'T say that gets them into trouble (jukebox mode anyone?).
There's no way that they're going to actively advertise that the songs won't be exportable into RB2 or RB3.
This game could either make or break the franchise. I personally don't see it as a winning financial opportunity. They had to have paid through the nose for the song rights. But in return, they're releasing a game that has fewer songs by one band that only true die-hard Beatles fans are going to go nuts over.
For example, my kids 13 & 20 could care less about the Beatles. Heck, I'm 41 and the Beatles are even before my time.
What's going to make things even worse is that GH5 will release a week prior.
We all agree that RB is the superior game but it's hard to beat the name recognition that GH garners and the earlier release date.
My biggest hope is that they already have RB3 in the works for a spring release (and it better include a RB2 export function).