Yes, but it is not installed by default. You have to install it separately, at least for now,which makes things a lot more complicated if you want your app to rely on it.
Edge is pushed to the vast majority of PCs, and on those machines, I believe it provides a system-level webview2 component. You can choose to package your own webview2 into your app if you want the extra compatability that offers at expense of app size and ram usage
