nope
Any content already made in RBN will be supported by RBN 2.0 in Rock Band 3. Using any of the new features will presumably make your content RB3-exclusive. Songs for RBN 2.0 will begin to release at the end of Q1 2011. Left out, however, is support for pro guitar authoring, as explained by Harmonix:
- The way that Pro Guitar DLC is implemented in Rock Band 3, it would have been substantial work to add to the pipeline for both Harmonix and Microsoft.
- It is extremely time consuming to author, to the point that it might be just as time consuming to author a Pro Guitar part as it would be to author the rest of the track.
- Peer Reviewing any Pro Guitar songs would be problematic due to the fact that we will be building a brand new install base of Pro Guitar players at launch.

so... are people just supposed to send you their guitar tracks so you can author the pro version? for free?
it's not the cash i have a problem with it's the principle and at this point I recognize where the issue stems from (tha...