Google wants to make sideloading Android apps safer by verifying developers’ identities
www.androidauthority.com
Google wants to make sideloading safer on Android by verifiying the identities of developers who distribute apps outside the Play Store.

How is this going to be enforced if you are just downloading apks? It states they will enforce verification across sources outside of the play store. This doesn’t sound possible unless they just make stock android unable to side load