Thank you to Morien for providing that information, but there is a degree of frustration bubbling in the Pendragon community, I have to say, about the disjointed nature of Pendragon releases currently.
I get that making premature announcements is counter productive, and I’ve no idea of publishing issues behind the scenes, but a setting book (the GMs Guide?) should have really been released very close to the Core Rules (call it a “Core Setting” book would be more in line too). We had to wait a long time with just the Starter set too.
I think in the long term the line looks well supported but, as I say, there is palpable level of frustration out there at the moment.