FUD Zilla claims AMD will launch a 5.5W single-core Ontario processor in 2011. The chip aims at the embedded, notebook and small form factor market. Graphics aren't included though.
It is a single-core Ontario CPU and it comes without a GPU, so it will be able to work with a 5.5W TDP. This matches the magical TDPs of Intel's CULV Core 2 Solo SU3500 clocked at 1.4GHz which was the best TDP for Intel's non-Atom cores. Most CULVs that Intel sells today are 10W, but again Atom N200 series has 2.5W TPD which is drastically lower.
The site also has some details about the dual-core Ontario, this 2011 model will have on-die graphics and will have a 18W TDP.
There will be some lower TDP versions of this core with graphics but if you are looking for top performance it will have to come from this 18W part.
As we said many times before, Ontario comes powered by Bobcat, AMD's new core that will compete against Atom in single or dual-core versions. However, unlike the Atom, it will pack quite powerful graphics.
We are not aware of any clock speeds at this time, but we do know that this is exclusively a TSMC processor as AMD's belowed Globalfoundries doesn't want to play with 40nm and will only develop the 28nm bulk process.