AMD recently participated in two WorldHostingDays events, presenting their cloud server strategy. Two large parts of the presentations were Seamicro technology, announced back in October, and Opteron roadmap for 2013 and 2014 years. The roadmap didn't reveal the names or capabilities of future Opteron microprocessors, but it had a few interesting tidbits:read more (camo jacket): http://www.cpu-world.com/news_2012/2012120301_AMD_server_CPU_roadmap_for_2013_and_2014.html
The first thing that you may notice is that the current generation of Opteron 6300, or "Abu Dhabi", microprocessors will be on the market until mid-2014, when it is going to be replaced by unnamed 28nm processor. The same is true for soon to be released Opteron 4300 (Seoul) and 3300 (Delhi) series CPUs. The roadmap states that Abu Dhabi, Seoul and Delhi products will be based on stepping C of Orochi design, that is on a Piledriver core. This confirms previous reports that AMD Steamroller core, a successor to Piledriver, was pushed to 2014.