To begin with, Progressive Web Apps are the web apps formed to perform like native applications. They are designed in a way that the pace of the work rate would go high and even while offline, with the ability to be added to the home screen. For a while now, Chrome has been leading the charge on PWAs and very recently enabling their inclusion to be installed to the app drawer, similar to the native applications.
Service Workers, one of the key source of technologies that makes PWAs possible, has been in Firefox since January 2017, with the release of v44. Now, Mozilla has also joined in to fill in the feature gaps. The recent declaration by the company states that this Firefox 58 is expected for shipping in January 2018, and will provide support assistance to web app manifests. This enables the web apps to set a custom app icon/startup page and conceal the browser UI when opened from the home screen.
Firefox in all probability would be installing a new button to the address bar that would be perceived while visiting this Progressive Web App, allowing it to get added to the home screen with one tap. PWAs added to the home screen will appear as a separate entry in Android’s recent screen, but might sounds like they will be still limited to home screen shortcuts, and won’t appear in the app drawer like Chrome PWAs usually do.
Right now, Mozilla is also working on more web features related to Progressive Web Apps, like background sync, the Payment Request API, and the Web Share API.