I am not at all ready for the PS4. Honestly, I'm sure majority of the PS3 customers are enjoying the features of the PS3 and I'm sure it will last a good couple of years more. They can just keep updating the model of the PS3 and adding more features to it until they are out of ideas.
Its unfortunate that most americans own a 360, and proudly spend 60$ and up a month to play online for something that should be free, the xbox is not even all that great, and the marketing strategy it had was lame anyway from the get go.