Intel starts off its keynote with the Atom Z2420, a quad-core CPU based on the Lexington reference made for entry-level smartphones. The Bay Trail platform is expected to make its way to upcoming tablets and Intel promises to deliver Haswell/Ivy Bridge CPUs with a TDP of only 7 Watts.
http://www.notebookcheck.net/Intel-presents-its-first-Bay-Trail-processor-and-a-quad-core-Atom-Z2420-for-smartphones.87120.0.html