What better time for the folks at Kayak to update its iOS app than during one of the busiest traveling seasons of the year? (Perhaps before this time of year, but maybe we're just bitter about the "deals" we got back in July.) All that aside, the new version not only unifies the various applications on the platform, but it also includes a major UI overhaul, plus some new features such as car rental search and an autofill option. Some of the older, but useful, elements -- like hotel and flight search -- also saw some design changes, accompanied by slight overall improv
