First off, HERE are the PS4 Tech Specs:
System Memory: 8GB
Video Memory: 2.2 GB
CPU: 4x Dual-Core AMD64 "Bulldozer" (so, 8x cores)
GPU: AMD R10xx
Ports: 4x USB 3.0, 2x Ethernet
Audio Output: HDMI & Optical, 2.0, 5.1 & 7.1 channels
There's more known NOW on the future controller--which seems to ditch the Dual Shock design that's been the MAINSTAY of the Sony Brand since the later years of the PSX/PSOne, instead they're going to try to go past just trying emulate the PS Vita's interface(touchscreen)--going for a "Touch PAD". Motion Control will carry over(seeing it's better to start w/ motion, rather than adding it later). The Possibility of it featuring SOME Biometric feature(which is something Nintendo's been considering since the Wii)--and a new feature, a "Share" button, which will allow you to share content, etc via Social Network sites.
NOTHING is confirmed, but most of this seems pretty logical. But Might I ask: If it's got Blueray, and Blueray's kinda "passe" now--tell me it won't cost an "arm and a leg" like the PS3 did. And did the 3D Blueray/TV thing already fade out?