Google unveiled an updated Assistant with new features at its I/O event this year. It has only been available to the US market since then; now, however, it is being applied to others such as Ireland and Canada. Then again, it remains restricted to Pixel devices in these regions.
https://www.notebookcheck.net/The-latest-Google-Assistant-version-is-rolling-out-to-more-English-speaking-regions.447260.0.html