According to http://en.wikipedia.org/wiki/Intel_Core_i5: Based on this it shall
Lynnfield is the codename of an upcoming family of Intel desktop x86-64 microprocessors. It is scheduled to be released in the third quarter of 2009 using the Intel Nehalem microarchitecture and is a mainstream variant to the Intel Core i7 family. Lynnfield microprocessors will feature an integrated dual-channel DDR3 memory controller, integrated PCI-Express graphics controller and Direct Media Interface controller for communication with Intel P55 (Ibexpeak) chipset. Lynnfield was supposed to be released in July, 2009, but has been delayed to September because Intel wants vendors to deplete the Intel series 4 chipset so the processor can be released with the Intel series 5 chipsets. It has been stated among various sources that Core i5 would be the brand name for Lynnfield, but Intel announced at Computex 2009 that this was not the case.