📱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)

📱iOS 5.2 - 18P4346 has been released 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 11.2 - 20D64 stopped being signed for 1 device
Mac Mini (M1, Late 2020)

📱iOS 14.3 - 18K561 stopped being signed for 1 device
Apple TV 4 (2015)

📱iOS 14.3 - 18K563 stopped being signed for 1 device
HomePod mini

📱iOS 14.3 - 18C66 stopped being signed for 62 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, 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 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 14.3 - 18C66 stopped being signed for 2 devices
iPad Pro 4 (12.9-inch, WiFi) and iPhone X (GSM)

📱iOS 5.1 - 18P3030 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 11.2.1 - 20D74 has been released for 4 devices
ADP3,2, MacBook Air (M1, Late 2020), MacBook Pro (M1, Late 2020) and Mac Mini (M1, Late 2020)

📱iOS 11.2.1 - 20D74 started being signed for 1 device
Mac Mini (M1, Late 2020)

📱iOS 11.2 - 20D64 started being signed for 1 device
Mac Mini (M1, Late 2020)

📱iOS 11.1 - 20C69 started being signed for 1 device
Mac Mini (M1, Late 2020)

📱iOS 11.0.1 - 20B29 started being signed for 1 device
Mac Mini (M1, Late 2020)