Thanks for waiting, this is how PS4 digital sharing works, and more - PlayStation®4 FAQ - PlayStation® http://t.co/d8RD3pQhpb

— Shuhei Yoshida (@yosp) October 26, 2013

http://m.us.playstation.com/ps4/features/ps4-faq/

To summarize, you may designate 1 ps4 as your primary console for your PSN account, you may play your downloaded games and enjoy the benefits of your PS+ subscription on all the other accounts on this primary system. You may also use the remote play feature from your primary console.

You may download, play games and enjoy PS+ on an unlimited amount of PS4 consoles other than your primary console as long as you're signed in and only from your account.

You may play games and enjoy PS+ simultaneously on two PS4 consoles: the primary one and another alternate console with your account.

This is old news.

tl;dr - better than PS3 for some people, worse than PS3 for others

Has Sony elaborated more on the whole letting your online friends "take control of the controller" thing? To me, that'll be a really nice way to let friends demo a game and convince them to buy it and join you.

Here is the ign article. You just copy and paste the article in the OP. It will be great for others.

http://www.ign.com/articles/2013/10/26/ps4-how-digital-sharing-works

That would be really cool, it's a win-win feature for Sony. I've always said that it would be great if you were able to do remote play from one PS4 to another, that way you could play your games on a friends house without having to do a a massive download.

They said at the PS4 reveal when the Gaikai guy came on stage he was saying how if you were stuck on a particular section another player could take control over your game via online and beat if for you.

Right, but we don't know if both need to own the game. What platformmaster is talking about is doing it with someone who doesn't own the game while I'm talking about accessing your games remotely via steaming.