SUN/AMD with common socket?

The gossip accelerator Inquirer reports about a shared socket between Sun and AMD processors. Okay, i will not comment this rumor. But as a mindgame: The logical development of such an socket would be a multi-cpu-architecture system. A Solaris SparX86-64 which runs Sparc and x64-programs in parallel on the same instance of the operating system. The possibilities are infinite. Or a OLTP-Acceleratorchip (called Rock) for AMD-systems or an numbercrunching coprocessor (called Opteron) for a Sparc-System. Neat vision. I will do some research of this topic tomorrow morning.