The main thing they were stressing were:
- how easy it will be to develop for (or port to)
- how powerful it is
- how quick it will be (resume game shut off feature, instant play on demos, a second processor just for background downloading, the ability to start downloads from computers/smartphones)
- how you can access your games from anywhere (smart phones, tablets, vita)
- and then you have all the new capture features like always recording your gameplay, jumping in to help a friend play their game, watching your friends play their games.
These are all very very smart important features they needed to get right. Sony has some of the best first party studios around and will have excellent third party support (judging by the massive amount of studios and publishers they already have support from and especially since they allow for self publishing for indie developers).
They put on the table a very healthy powerful environment to create games, and have barely dipped their toes into announcing the massive amount of software support for the system.
If you like playing current games, it really doesn't make sense to count out the PS4. It seems very consumer and developer friendly.