The Playstation Now feature on Playstation 4 is a feature that allows you to stream PS3 games on your PS3 for free, but it requires a monthly, half yearly, or yearly subscription to do so.
You cannot play Playstation 4 games on a Playstation 4 console. You are also unable to play Playstation 3 games on the Playstation 4.
Most Playstation 3 games play on the Playstation Network and so do many PSP games
Yes
You can join both Playstation Plus and Playstation Now. Though it should be noted that Playstation Now is in beta phase and you can only sign up for a chance to use it.
I believe the feature is try at a trial introductory rate not for free
No, the Playstation 4 is not backwards compatible and you can only play Playstation 4 games on it.
Playstation Plus and Playstation Now are two different things. You can have both at the same time. Though it should be noted that Playstation Now is still in the beta testing phase.
There will be a new game console from Sony the name might not be the PlayStation 4 or even PlayStation
No it will not
It was said at a playstation convention on TV that they were planning on making a playstation 4. They are not quite sure when it will be out.
As of this writing, Uncharted 4 will be only for PlayStation 4.
There will be a new Playstation it is very profitable