iPadOS 14.4 includes the following improvements for your iPad:

Smaller QR codes can be recognized by Camera

Option to classify Bluetooth device type in Settings for correct identification of headphones for audio notifications

This release also fixes the following issues:

Typing may be delayed and word suggestions may not appear in the keyboard

The keyboard may not come up in the correct language in Messages

For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222