Chrome 42 for Android will encourage users to add high quality sites they visit frequently to their home screen. In the future it will support the same for native apps. This entry is for the visual aspect, not the API surface. The Manifest API surface is covered by https://www.chromestatus.com/features/4754986680451072. The event API surface is covered in https://www.chromestatus.com/features/6560913322672128
Docs: https://github.com/slightlyoff/AppInstallImprovements/blob/master/explainer.md http://updates.html5rocks.com/2015/03/increasing-engagement-with-app-install-banners-in-chrome-for-android
Samples: https://github.com/GoogleChrome/samples/tree/gh-pages/app-install-banner/