It's a hefty slab of book that came from Amazon, however like Dark Heresy it seems to be fairly comprehensive. If you've suffered sticker shock from the price then it is worth noting that it seems to be the lavish production values that
We've given character and ship generation a go and had a tremendous amount of fun. It's a whole different scale to Dark Heresy, the PCs are very much among the Imperial Elite, able to travel freely, purchase planets and generally have a good time.
One thing I think is immediately important is that you have to create some reasoning during character generation as to why the characters have not stopped and are just enjoying the fruits of their endeavours.