Ping has released the Ping s57 and from all reports is a real hit (sorry about that!), but is not a club for all. It is predominately deisigned for the 'better player' with the gravity being centered more towards the shaft which should promote more 'workability'.
Materials
17-4 stainless steel body. Tungsten toe weight.{multithumb} 
Technology Benefits
Player’s-size, tour-inspired iron with tungsten toe weight and dual, vertical stabilising bars for the ideal blend of feel, forgiveness and distance control. Machined face and grooves for consistent performance across the hitting area. Brushed silver chrome finish.
Specifications
Available 2-9, PW. Standard shaft: True Temper Dynamic Gold (S300 and X100). PING TFC129i (Soft R, R & S flexes).
Fitting Variables
Lie angle (12 color codes), shaft flex/type, shaft length, grip size/type and swingweight
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