Apple Released iOS 7.1 to all apple devices

iPhone:

iPhone 5s (Model A1453, A1533)
iPhone 5s (Model A1457, A1518, A1528, A1530)
iPhone 5c (Model A1456, A1532)
iPhone 5c (Model A1507, A1516, A1526, A1529)
iPhone 5 (Model A1428)
iPhone 5 (Model A1429)
iPhone 4s
iPhone 4 (GSM)
iPhone 4 (GSM Rev A)
iPhone 4 (CDMA)

iPod touch:

iPod touch (5th generation)

iPad:

iPad Air (Model A1474)
iPad Air (Model A1475)
iPad mini (Model A1489)
iPad mini (Model A1490)
iPad (4th generation Model A1458)
iPad (4th generation Model A1459)
iPad (4th generation Model A1460)
iPad mini (Model A1432)
iPad mini (Model A1454)
iPad mini (Model A1455)
iPad Wi-Fi 3rd generation
iPad Wi-Fi + Cellular (model for ATT)
iPad Wi-Fi + Cellular (model for Verizon)
iPad 2 Wi-Fi
iPad 2 Wi-Fi (Rev A)
iPad 2 Wi-Fi + 3G (GSM)
iPad 2 Wi-Fi + 3G (CDMA)