Probably going to be hard to get much useful insight from the Miami not from Florida game. He was pretty vanilla and did what he needed to do while knocking some rust off. Overall, I'd say some improvement.
The biggest thing might not be a passing improvement, but a complete change in his game style. We saw a few glimpses of the running ability, which some in the Hawkeye camp have indicated might be stressed much more this year. There has even been talk of installing a nickle and dime option system, a la 2007 Pat White/Steve Slaton. You heard it here first.