One of the key selling points of the next generation Atom, codenamed Cedar-Trail M, is that it will lower the complete system TDP all the way to 5W.

This is definitely something that might get you excited as the current N4x0 generation of Atoms have 7W to 8 W TDPs. With the introduction of new Atoms, netbooks will become fanless, at least some of them, so there might be some new form factors and it will bring the sleeker designs to market.

This should also mean that battery life will get at least slightly better and that nebooks ought to become cooler and slimmer.