You will receive a notification when the update is available for your device through the Windows Phone Store and you will have to wait until the notification arrives before you can install the update.
Fine tune your Nokia Windows Phone experience with this helpful app. Install an update to ensure you have the latest features and improvementsThe update is also available for the Nokia Lumia 810 on T-Mobile and the Nokia Lumia 822 on Verizon. If you own a new Lumia Windows Phone 8 device and have received the Display + Touch update, leave us a comment below.
source – WPCentral