Weeks after the One X received the Android 4.1.1 and Sense 4+ update, HTC is currently doing the same for the One XL.
As the over-the-air (OTA) update file size is 657.98MB, we recommend that you update your device over a Wi-Fi connection. To check whether the update is available on your One XL, go to Settings > About > Software updates.
According to Android Community, the update was first reported by users in Singapore and Taiwan last night. Do expect significant improvements to the One XL such as faster navigation and an enhanced camera interface. You can check out the new features in our review of the HTC One X+. There is still no news on when the One S will be receiving the update, but we are expecting HTC to deliver it soon.
Source: Android Community