1. You can have custom keyboard shortcuts for bot commands.
2. Commands now have --silent and --update_status options. Read about them on documentation.
3. Using above new features you can have a custom chat close shortcut, add subject etc... Unlimited options.

Relevant youtube video - https://youtu.be/fUfY9Iko9J0

For update just follow standard update procedure For manual update it's update_277.sql