iPhone6Plus:http://adcdownload.apple.com/WWDC_2015/iOS_9_beta/iOS_9_beta__iPhone_6_Plus__13A4254v.zip

iPad
iPadAir2(A1566):http://adcdownload.apple.com/WWDC_2015/iOS_9_beta/iOS_9_beta__iPad_Air_2_Model_A1566__13A4254v.zip

iPadAir2(A1567):http://adcdownload.apple.com/WWDC_2015/iOS_9_beta/iOS_9_beta__iPad_Air_2_Model_A1567__13A4254v.zip

iPadMini3(A1599):http://adcdownload.apple.com/WWDC_2015/iOS_9_beta/iOS_9_beta__iPad_mini_3_Model_A1599__13A4254v.zip

iPadMini3(A1600):http://adcdownload.apple.com/WWDC_2015/iOS_9_beta/iOS_9_beta__iPad_mini_3_Model_A1600__13A4254v.zip

iPadMini3(A1601):http://adcdownload.apple.com/WWDC_2015/iOS_9_beta/iOS_9_beta__iPad_mini_3_Model_A1601__13A4254v.zip