As it is around 300 monsters, that is a long list. Some of them are from RA, some from Slumbering Tsar and a lot are new monsters, others are conversions. I just downloaded it last night and at first glance it looks great! There are a lot more useable monsters in it than the previous Tomes and less what I would call fluff monsters. You know the ones that look cool, but you'd never use them. CRs range from 1/4-30 with the bulk of them 1-11. My players will already be facing one of them next gaming session as it is from ST. Oh, and yes they are looking at it still being a GenCon release.