Junctionless Transistor

Courtesy of EEtimes: The world witnessing the first junctionless transistor.
"The breakthrough is based on the deployment of a control gate around a silicon wire that measures just a few dozen atoms across. The gate can be used to "squeeze" the electron channel to nothing without the use of junctions."

"Of course, crimping a silicon nanowire to control current in a lab setting and manufacturing these junction-free transistors en masse are two completely different things, and it remains to be seen whether the innovation can scale effectively across the chip industry. But if the technology does indeed pan out on a large scale, the breakthrough could lead to a paradigm shift in chip architecture."

So, basically, we will only be using a gate to 'squeeze' the electrons out from flowing across the nano-sized wire. If these become a reality, it will contribute significantly to cheaper transistors in the future, and more energy efficient devices as the leakage current will be significantly lower.

Therefore, we will see less of gated-channel transistor:

and more of this in the future:

Cross section of a silicon wire with wrap-around insulator and overlaid gate

More geeky info can also be read at PopSci.