does anyone know if Magento planning to add PWA (Progressive Web Apps) feature out of the box in the next releases e.g. in v2.3.0 or v2.4.0 ?
As per the announcement in Magento imagine conference 2018,
Progressive Web Apps (PWA) will be in the main features of
Magento 2.3, has been announced and scheduled for Q3 of 2018.
You can check unofficial Magento2 Roadmap that mentioned all the features from multiple sources.
Some Other useful links that help to understand more about M2.3 features:
It's already out to use in Magento230. Official magento doc see https://devdocs.magento.com/guides/v2.3/release-notes/ReleaseNotes2.3.0OpenSource.html?_ga=2.20656574.769510250.1543917509-1921157898.1531735057]