Intel's Ultrabook concept is slow getting off its feet. Pricing is mostly to blame, and a big part of why Ultrabooks are so comparatively expensive is because the CPUs are pricey. Maybe Intel's Haswell architecture will change that. At the very least, Haswell, which is Intel's catch-all codename for both its mobile and desktop Shark Bay platform (the successor to Ivy Bridge) is a brand new core ("tock," as Intel calls it), and the version for Ultrabooks will be fairly close to a System-on-Chip (SoC) design.
VR-Zone breaks down the slides posted to Chiphell.com in detail. The desktop version will have two or four cores and support DDR3 and DDR3L memory up to 1600MHz in a dual-channel configuration. What's most interesting, however, is the single-chip platform designed for Ultrabooks, which will house the CPU cores, chipset, and graphics on the same multi-chip package. As CNet points out, this makes Intel's chip technically a System in Package, though it would appear as a single chip inside a PC or Mac. The upshot here is a high performance part that will lend itself to higher performing ultraslim notebooks and perhaps even tablets.
"This will make the ULT models Intel's first single chip performance processor," VR-Zone says, noting that it's unclear what the "T" stands for.
Haswell (Shark Bay) is scheduled replace Ivy Bridge in 2013.