Just got off the phone with Jeff Marshall from Harmonix and had quite the conversation with him.
Mainly he wanted to let me know there is some misconception about the "training" that has been touted about on the billboard and other web site articles.
The training was simply a 6 hr session with the people involved with the closed beta to showcase the tools that will be used (Reaper and Magma) so that people in the closed beta could help flesh out and give feed back on the documentation that will be created for any one to access.
HMX will not be providing ANY training to prospective authors... period... This was a one time deal to help them rollout the RBN... All information and tools and documentation will be given to the rest of us via the http://creators.rockband.com website over the next couple weeks.
In August the RBN goes in to Open beta and in September access to the XNA pipe line to the stores will be opened.
Jeff Also stated that the plugins needed for Reaper and the Magma software (compiler and encoder) WILL be free and that users will be directed to get Reaper from the Reaper website and the plugins and Magma from http://creators.rockband.com
To that end we are developing http://www.rockbandcreate.com to help bands, labels and artists get their music published via the RBN similar to what Rhythm Authors LLC is offering.
We hope that there is room for many independents and competition in this huge bit of news from Harmonix.