Not only a nice license for Castle but also for us. I think it's good that Castle are safeguarding development. I wouldn't be especially keen if we were in a position where we as RISC OS users never saw the benefits of 'outside' development.
It remains to be seen how Castle's commercial customers view ROOL (I'm sure that will have been considered!) and in the meantime I'll be looking forward to the release of a successor to my Iyonix.