Just coincidence, or something larger going on here?

Letting you change your default web browser is kind of worthless if they don't remove the restriction that prevents Google / Mozilla / etc from implementing actual browser engines. "Chrome" and "Firefox" on iOS are just skins on top of WebKit. Per https://developer.apple.com/ap... 2.5.6 Apps that browse the web must use the appropriate WebKit framework and WebKit Javascript.