An analyst from American Technology Research Corporation wrote in a recent report that Intel Corporation is proceeding with the development of x86-64-like technology code-named Yamhill. Last year there were some unofficial claims that Intel had cancelled the Yamhill project to fully concentrate on pushing the IA64 technology into the market.
The report written by Rick Whittington for an investment banking firm American Technology Research Corporation and quoted here says that Intel is still performing research and development on the Yamhill project and is planning to implement the technology into its next-generation microprocessors for server and desktop markets. In fact, there were two contradicting rumours on the idea and the conception of the Yamhill technology. One group thought that the Yamhill is a set of extensions that may be even based on the x86-64 technology; another believed that Yamhill is a powerful IA32 emulation tool for IA64 chips.
News source: X-bit labs