Apple has released iOS 8.1.1 for download, after releasing the beta for developers exactly two weeks ago, which noted some performance increases for the iPhone 4S and iPad 2. The download is 64MB for the iPhone 6, as seen below:

Below are the direct download links:

• Apple TV 3 (AppleTV3,1) version 7.0.2 (Build 12B435), Download
• Apple TV 3 (2013) (AppleTV3,2) version 7.0.2 (Build 12B435), Download
• iPad 2 (Wi-Fi) (iPad2,1) version 8.1.1 (Build 12B435), Download
• iPad 2 (GSM) (iPad2,2) version 8.1.1 (Build 12B435), Download
• iPad 2 (CDMA) (iPad2,3) version 8.1.1 (Build 12B435), Download
• iPad 2 (Mid 2012) (iPad2,4) version 8.1.1 (Build 12B435), Download
• iPad mini (Wi-Fi) (iPad2,5) version 8.1.1 (Build 12B435), Download
• iPad mini (GSM) (iPad2,6) version 8.1.1 (Build 12B435), Download
• iPad mini (CDMA) (iPad2,7) version 8.1.1 (Build 12B435), Download
• iPad 3 (Wi-Fi) (iPad3,1) version 8.1.1 (Build 12B435), Download
• iPad 3 (GSM) (iPad3,2) version 8.1.1 (Build 12B435), Download
• iPad 3 (CDMA) (iPad3,3) version 8.1.1 (Build 12B435), Download
• iPad 4 (Wi-Fi) (iPad3,4) version 8.1.1 (Build 12B435), Download
• iPad 4 (GSM) (iPad3,5) version 8.1.1 (Build 12B435), Download
• iPad 4 (CDMA) (iPad3,6) version 8.1.1 (Build 12B435), Download
• iPad Air (Wi-Fi) (iPad4,1) version 8.1.1 (Build 12B435), Download
• iPad Air (GSM) (iPad4,2) version 8.1.1 (Build 12B435), Download
• iPad Air (CDMA) (iPad4,3) version 8.1.1 (Build 12B435), Download
• iPad mini Retina (Wi-Fi) (iPad4,4) version 8.1.1 (Build 12B435), Download
• iPad mini Retina (GSM) (iPad4,5) version 8.1.1 (Build 12B435), Download
• iPad mini Retina (CDMA) (iPad4,6) version 8.1.1 (Build 12B435), Download
• iPad mini 3 (Wi-Fi) (iPad4,7) version 8.1.1 (Build 12B436), Download
• iPad mini 3 (Cellular) (iPad4,8) version 8.1.1 (Build 12B436), Download
• iPad mini 3 (China) (iPad4,9) version 8.1.1 (Build 12B436), Download
• iPad Air 2 (Wi-Fi) (iPad5,3) version 8.1.1 (Build 12B436), Download
• iPad Air 2 (Cellular) (iPad5,4) version 8.1.1 (Build 12B436), Download
• iPhone 4s (iPhone4,1) version 8.1.1 (Build 12B435), Download
• iPhone 5 (GSM) (iPhone5,1) version 8.1.1 (Build 12B435), Download
• iPhone 5 (CDMA) (iPhone5,2) version 8.1.1 (Build 12B435), Download
• iPhone 5c (GSM) (iPhone5,3) version 8.1.1 (Build 12B435), Download
• iPhone 5c (CDMA) (iPhone5,4) version 8.1.1 (Build 12B435), Download
• iPhone 5s (GSM) (iPhone6,1) version 8.1.1 (Build 12B435), Download
• iPhone 5s (CDMA) (iPhone6,2) version 8.1.1 (Build 12B435), Download
• iPhone 6 Plus (iPhone7,1) version 8.1.1 (Build 12B436), Download
• iPhone 6 (iPhone7,2) version 8.1.1 (Build 12B436), Download
• iPod touch 5G (iPod5,1) version 8.1.1 (Build 12B435), Download

Update: Here are the full iOS 8.1.1 release notes:

Support doc to be updated shortly. 

…more to follow