Based on that workout he's obviously in great 10k shape. 8 x 1 mile (7 of 'em in low 4:2x, then the last one in 4:15 (the article quotes 3:15, so assuming they meant 4:15), followed by 3 x 300m in 42. Given that this was part of a 140 mile week, he is likely in close to AR shape for the 10k.
And don't forget, what I think is one of the more revealing bits of the article, that AlSal said: ""Right now Galen is the only marathoner in our group,â€ Salazar says. â€œBut also, he is so far out in front of what those other guys are doingâ€¦â€ Salazar pauses, but doesnâ€™t finish the thought.""
AlSal likely knows what kind of work Farah is doing, and he makes it sound like Rupp is doing much more.
I think Rupp is a solid contender for the silver/bronze in the 10k (the Kenyans apparently suck in the heat as per their trials results) and a wildcard for the bronze in the marathon.