It's said that socket 1366 will support future gulftown CPUs:http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3641&p=9
"My recommendations from the initial Lynnfield review still stand, you'll want to opt for Bloomfield processor if you care about:
1) High-end multi-GPU performance (or other uses of high bandwidth PCIe)
2) Stock Voltage Overclocking
3) Future support for 6-core Gulftown CPUs"