A Dragon Quest Builders 2 demo was announced during the Square Enix E3 2019 media briefing. On June 27, 2019, people will be able to grab the free trial from the PlayStation Store for the PlayStation 4.
Only a PlayStation 4 Dragon Quest Builders 2 demo was announced during the presentation. However, in Japan, the demo was also available on the Nintendo Switch. Update: Nintendo has confirmed it will arrive on the Nintendo Switch eShop on June 27, 2019 as well.
Here is the E3 2019 Dragon Quest Builders 2 trailer.
Dragon Quest Builders 2 will be available on the Nintendo Switch and PlayStation 4 in North America and Europe on July 12, 2019. It is immediately available in Japan.