All signs are pointing toward Google announcing something smartwatch related at next month's Google I/O conference. Not only has Google filed a trademark for 'Pixel Watch' in the US, but Samsung has also showcased the long-awaited next version of Google Assistant.
https://www.notebookcheck.net/Google-files-Pixel-Watch-trademark-as-next-generation-Google-Assistant-seen-in-Samsung-Galaxy-Watch4-advert.615590.0.html