According to Xbit Labs, Haswell will be last mainstream CPU sold separately from motherboard. It seems that Intel plans to kill the chance to choose mobo on your own, or use older mobo for newer CPU and the Broadwell chips will be soldered into slots.
Source:
http://www.xbitlabs.com/news/cpu/di...hangeable_Desktop_Microprocessors_Report.html
Source:
http://www.xbitlabs.com/news/cpu/di...hangeable_Desktop_Microprocessors_Report.html