Three years old

Thanks to our playstation 3 for it gives us endless entertainment during night time. Aside from its capability of connecting to the internet and video games, we use it for viewing hi-definition movies especially. I wonder what comes next to this gadget? When it is out of style, I wonder if there will be a PS4 comes next and when? Certainly my husband will be upgrading our PS3 by then. We shall see. If you were to ask me, I wouldn't buy another one if our old one is still working and is giving us the satisfaction of crystal clear picture.