I guess to clarify, Music Creator 6 and Music Creator 6 Touch are different products. I'm not sure where the confusion is coming in regarding the Sound Blocks other then mistaking a tutorial video centered around Music Creator 6 and the content used in the video.
Music Creator 6 has been out for well over a year. Music Creator 6 Touch, on the other hand, is a brand new product. We just released Music Creator 6 Touch just over a month ago available through the Cakewalk store. Last week we also launched it on Steam as well. If you purchased it via either method, the end product is the same it's just distributed differently.
As with all products, content can change based on license agreements. Breaking down the core features, however, Music Creator 6 Touch has a lot of added features that Music Creator 6 did not have, such as Windows 8 support, touch support, automation lanes, take lanes, new plug-ins (TH2 Creator) etc. Really the full breakdown of the product can be found here:
http://www.cakewalk.com/Products/MusicCreator/ Also, to clarify, there is no boxed version of this product with more content. We have not released a boxed version of Music Creator 6 Touch.
I'm sorry for the confusion.