So we're no longer bound by the NDA, and can now freely discuss features and limitations of the RE SDK, publish tutorials and code examples, etc.
Excerpt from the new license:
The new developer portal is here: https://developer.reasonstudios.comReason Studios hereby grants to you a royalty-free license to study, amend and use the Rack Extension SDK in order to (i) develop Rack Extension products for Reason Studios Shop and (ii) develop, publish and distribute user tutorials, manuals, graphical user interfaces, add-ons and other software for use in connection with development of Reason Studios Rack Extension products.