iPad App Updates Blank? Here’s a Workaround
Does the App Store app on your iPad indicate updates are available, but then displays a blank screen when you open the app? You are not alone and, thankfully, there is a workaround for the iPad App Update issue — please, step inside.
Well, there is a way to get iPad app updates and it only takes a minute or two — I was able to find and begin install five updates in about a minute.
iPad App Update Workaround:
1. Open App Store
2. Select All
3. Select apps by letter (left hand side of the screen)
4. Look for apps, letter by letter, displaying “Update”
This issue seems to mostly affect those running iOS 6.1.3 and is one that Apple needs to address. Further, it is perhaps to associate the iPad app update issue with the ongoing Apple Developer Website outage, which has only be partly resolved as of this writing.
Source: Apple Support Communities