if I had to guess I seriously doubt it. I think the only mod they will HOPEFULLY make is a 8GB card on the 470. This one is less expensive to make with less fans, metal etc.
Agreed on the 8GB. These days, I don't think 4 GB cards are certain to be future-proof. Example: if ASICs come out for Zcash, they will probably mod the Equihash parameters so that 8 GB is necessary for best performance (4 GB will still work, but at a decided lower solution rate). It's not a likely event, but when you're spending this much money, you'd like to think it will produce at high performance for years to come.