The cost of Pro guitar will be $1, the interview reveals. "The alternative would be of course to include it (in the regular download) and up the price for everybody, which I don't think is really fair," DeGooyer argued. Additionally, he reveals that not all DLC tracks will even offer Pro notes for guitar, saying certain bands' "guitar parts wouldn't rise to the level that they would need to have pro mode authoring associated with them." Ouch.
There are plans to retrofit earlier DLC with Pro tracks, however DeGooyer was unable to clarify how the process would work. Apparently, the studio is having trouble making a system that "recognizes people who have already purchased" DLC in order to "be able to supply the updated file at a discount."