The wording on the preorder bonuses is really double-speaky and ambiguous (emphasis mine):
"If you pre-order Twilight Imperium Fourth Edition, you’ll have the opportunity to receive the Twilight Imperium Fourth Edition rulebooks bound together in a single volume hardback book. ... Additionally, you’ll have a chance to receive two beautiful limited edition 11 x 17 art prints with special commemorative branding"
Does this mean these bonuses are selected randomly among the group of people