Not impressed at all. The community stuff is cool and all, but none of it really makes me want to get the PS4 instead of continuing to upgrade my PC. They didn't really show us anything new, it's just a beefier console with a couple of handy community features. I can do all this on my PC already.
I guess it all depends on the price though... If it's much more than 300€ (which it probably will be), I'm not interested.
CPU : x86-64 AMD “Jaguar”, 8 cores
GPU : 1.84 TFLOPS, AMD next-generation Radeon™ based graphics engine
Memory GDDR5 8GB