iOS 6.1 arrived just a couple of days ago, bringing little beyond support for new international LTE carriers and movie ticket purchasing via Siri in the U.S., but it’s already been installed on a significant percentage of active iPhones, iPads and iPod touches out there. Onswipe, creators of touch templates for web-based content, have seen adoption of iOS 6.1 rise quickly, from 11.35 percent within the first 24 hours, to 16.92 percent this morning, and up to an impressive 21.81 percent as of 3 PM ET today.