we've just released program update for avast! Free/Pro/IS/Premier (8.0.1488).
List of changes
• New SecureLine component
• Screen readers compatibility improved
• Software Updater improvements
• Improved stability & performance
• Fixed glitches in UI
It should be possible to install this version on top of your existing avast! installation (all settings should be preserved).
Or you can use the in-product updater.