The iPad User Guide is also missing on iPads after the update. The Guide in PDF at Apple:
View this user guide on iPad
You can view the iPad User Guide on iPad in Safari, and in the free iBooks app.
View the user guide in Safari. In Safari, tap , then tap the iPad User Guide bookmark. Or go to
Add an icon for the user guide to the Home screen. Tap , then tap Add to Home Screen.
View the user guide in iBooks. If you haven’t installed iBooks, open the App Store, then search for and install iBooks. Open iBooks and tap Store. Search for “iPad User Guide,” then select and download the user guide.