I’m gearing up to buy CW OS3 whenever it becomes available, however in have one strange question. Does it come with the Omega Master Rulebook?

As I’m waiting for OS3 to return to stock I’m  thinking of buying what I can for now, and this book is available. I just can’t find any real description what it is for (nor what is in the OS3 box on your site nor anywhere else reliable)

Thank you in advance for your answers.