Several research and analytics firms have reported that iOS 8 adoption has reached 30{813a954d5e225a1509f22204ece89c855080ce25555f20805f61bed63cbfde3b} following the first weekend of iPhone 6 and iPhone 6 Plus sales, based on in-app analytics reported by Fiksu, Mixpanel, Appsee, and Chitika. While this number is up from the estimated 15{813a954d5e225a1509f22204ece89c855080ce25555f20805f61bed63cbfde3b} adoption following the initial iOS 8 public release last week, it still falls short of the almost 50{813a954d5e225a1509f22204ece89c855080ce25555f20805f61bed63cbfde3b} of users that had updated to iOS 7 by this time last year. The higher adoption…