AMD's SeaMicro division introduced a new microserver with AMD and Intel processors, but didn't reveal if they had any plans with ARM's processors. The Inquirer asked Andrew Feldman, GM of AMD's data center server division, about ARM support and go to hear it's not going to happen until until late 2013 or early 2014 at the earliest:
Andrew Feldman, GM of AMD's data center server division said, "An [ARM Cortex} A9 core cannot stack up, it's not a very interesting part. Looking forward they [ARM] have a new part early 2014, late 2013 depending on who you listen to. Could that be an interesting part? That could be. [...] When there is a good ARM part we will look at it."
AMD recently became an ARM licensee and since its x86 license from Intel isn't helping its bottom line, it is a prudent move to another architecture that looks to have a good future.