The PlayStation 4 will be out on Friday, November 15 in North America, Sony announced at the end of their GamesCom press conference today in Germany. November 29 for Europe.
It'll retail for $399 (or 349 euros).
This is pretty much the last missing piece to the puzzle—we now know just about all there is to know about Sony's next-gen console, which we'll be able to get our hands on in just three months.