📱iOS 8.4.3 - 12H911 stopped being signed for 2 devices
Apple TV 3 and Apple TV 3 (2013)

📱iOS 8.4.3 - 12H903 stopped being signed for 2 devices
Apple TV 3 and Apple TV 3 (2013)

📱iOS 14.2 - 18K57 stopped being signed for 1 device
Apple TV 4 (2015)

📱iOS 14.2.1 - 18K75 stopped being signed for 1 device
HomePod mini

📱iOS 5.0.1 - 18P2561 stopped being signed for 16 devices
iBridge2,1, iBridge2,10, iBridge2,12, iBridge2,14, iBridge2,15, iBridge2,16, iBridge2,19, iBridge2,20, iBridge2,21, iBridge2,22, iBridge2,3, iBridge2,4, iBridge2,5, iBridge2,6, iBridge2,7 and iBridge2,8

📱iOS 4.6 - 17P6610 stopped being signed for 13 devices
iBridge2,1, iBridge2,10, iBridge2,12, iBridge2,14, iBridge2,15, iBridge2,16, iBridge2,21, iBridge2,22, iBridge2,3, iBridge2,5, iBridge2,6, iBridge2,7 and iBridge2,8

📱iOS 14.2 - 18B92 stopped being signed for 45 devices
iPad Mini 5 (WiFi), iPad Mini 5 (Cellular), iPad Air 3 (Cellular), iPad 8 (WiFi), iPad 8 (Cellular), iPad Mini 4 (WiFi), iPad Mini 4 (Cellular), iPad Air 2 (WiFi), iPad Air 2 (Cellular), iPad 5 (WiFi), iPad 5 (Cellular), iPad Pro 9.7-inch (Cellular), iPad 7 (Cellular), iPad Pro (10.5-inch, WiFi), iPad Pro (10.5-inch, Cellular), iPad 6 (WiFi), iPad Pro 3 (11-inch, WiFi), iPad Pro 4 (11-inch, Cellular), iPad Pro 4 (12.9-inch, Cellular), iPad Pro 3 (11-inch, WiFi, 1TB Model), iPad Pro 3 (11-inch, Cellular), iPad Pro 3 (11-inch, Cellular, 1TB Model), iPad Pro 3 (12.9-inch, WiFi), iPad Pro 3 (12.9-inch, Cellular), iPad Pro 3 (12.9-inch, Cellular, 1TB Model), iPad Pro 4 (11-inch, WiFi), iPhone 8 (Global), iPhone 8 Plus (Global), iPhone X (Global), iPhone 8 Plus (GSM), iPhone X (GSM), iPhone XS, iPhone XS Max (China), iPhone XS Max, iPhone XR, iPhone 11 Pro Max, iPhone SE (2020), iPhone 12 mini, iPhone 12 Pro Max, iPhone 6s, iPhone 6s+, iPhone 7 (Global), iPhone 7 Plus (Global), iPhone 7 (GSM) and iPhone 7 Plus (GSM)

📱iOS 12.4.9 - 16H5 stopped being signed for 8 devices
iPad Air (WiFi), iPad Air (Cellular), iPad Mini 2 (WiFi), iPad Mini 2 (Cellular), iPad Mini 2 (China), iPhone 5s (Global), iPhone 6 and iPod touch 6

📱iOS 14.2 - 18B111 stopped being signed for 4 devices
iPhone 12 mini, iPhone 12, iPhone 12 Pro and iPhone 12 Pro Max

📱iOS 14.2.1 - 18B121 stopped being signed for 3 devices
iPhone 12, iPhone 12 Pro and iPhone 12 Pro Max

📱iOS 14.2 - 18B92 stopped being signed for 13 devices
iPad Air 4 (WiFi), iPad Air 4 (Cellular), iPad Pro 12.9-inch (Cellular), iPad 7 (WiFi), iPad Pro 2 (12.9-inch, Cellular), iPad 6 (Cellular), iPad Pro 3 (12.9-inch, WiFi, 1TB Model), iPhone 8 (GSM), iPhone 11, iPhone 11 Pro, iPhone 12, iPhone 12 Pro and iPod touch 7

📱iOS 12.4.9 - 16H5 stopped being signed for 2 devices
iPad Mini 3 (WiFi) and iPhone 6+

📱iOS 8.4.3 - 12H885 stopped being signed for 2 devices
Apple TV 3 and Apple TV 3 (2013)

📱iOS 4.6 - 17P6610 stopped being signed for 3 devices
iBridge2,19, iBridge2,20 and iBridge2,4

📱iOS 12.5 - 16H20 stopped being signed for 13 devices
iPad Air (WiFi), iPad Air (Cellular), iPad Air (China), iPad Mini 2 (WiFi), iPad Mini 2 (Cellular), iPad Mini 2 (China), iPad Mini 3 (WiFi), iPad Mini 3 (Cellular), iPad Mini 3 (China), iPhone 5s (Global), iPhone 6+, iPhone 6 and iPod touch 6

📱iOS 12.4.9 - 16H5 stopped being signed for 1 device
iPad Air (China)

📱iOS 12.5 - 16H20 stopped being signed for 1 device
iPhone 5s (GSM)

📱iOS 14.4 - 18K802 has been released for 2 devices
Apple TV 4 (2015) and HomePod mini

📱iOS 14.4 - 18D52 has been released for 64 devices
iPad Mini 5 (WiFi), iPad Mini 5 (Cellular), iPad Air 3 (WiFi), iPad Air 3 (Cellular), iPad 8 (WiFi), iPad 8 (Cellular), iPad Air 4 (WiFi), iPad Air 4 (Cellular), iPad Mini 4 (WiFi), iPad Mini 4 (Cellular), iPad Air 2 (WiFi), iPad Air 2 (Cellular), iPad 5 (WiFi), iPad 5 (Cellular), iPad Pro 9.7-inch (WiFi), iPad Pro 9.7-inch (Cellular), iPad Pro 12.9-inch (WiFi), iPad Pro 12.9-inch (Cellular), iPad Pro 2 (12.9-inch, WiFi), iPad 7 (WiFi), iPad 7 (Cellular), iPad Pro 2 (12.9-inch, Cellular), iPad Pro (10.5-inch, WiFi), iPad Pro (10.5-inch, Cellular), iPad 6 (WiFi), iPad 6 (Cellular), iPad Pro 3 (11-inch, WiFi), iPad Pro 4 (11-inch, Cellular), iPad Pro 4 (12.9-inch, WiFi), iPad Pro 4 (12.9-inch, Cellular), iPad Pro 3 (11-inch, WiFi, 1TB Model), iPad Pro 3 (11-inch, Cellular), iPad Pro 3 (11-inch, Cellular, 1TB Model), iPad Pro 3 (12.9-inch, WiFi), iPad Pro 3 (12.9-inch, WiFi, 1TB Model), iPad Pro 3 (12.9-inch, Cellular), iPad Pro 3 (12.9-inch, Cellular, 1TB Model), iPad Pro 4 (11-inch, WiFi), iPhone 8 (Global), iPhone 8 Plus (Global), iPhone X (Global), iPhone 8 (GSM), iPhone 8 Plus (GSM), iPhone X (GSM), iPhone XS, iPhone XS Max (China), iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2020), iPhone 12 mini, iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 6s, iPhone 6s+, iPhone SE, iPhone 7 (Global), iPhone 7 Plus (Global), iPhone 7 (GSM), iPhone 7 Plus (GSM) and iPod touch 7

📱iOS 11.2 - 20D64 has been released for 4 devices
ADP3,2, MacBook Air (M1, Late 2020), MacBook Pro (M1, Late 2020) and Mac Mini (M1, Late 2020)