future of transistors

From the linled artical:

A typical high-end Intel microprocessor is today based on roughly one billion transistors or more, each capable of switching on and off about 300 billion times a second and packed densely enough that two million transistors would fit comfortably in the period at the end of this sentence.

I think the "300 billion times a second" might be a typo. What is the present state of the art switching speed for a Intel, 3ghz?

Lefty