I don't think we have enough information to make any decisions right now. "Radeon 7" looks promising, but all we have is marketing slides from CES... we won't know how it stacks up until the mighty W1zzard tells us. I'm also not sure if Radeon 7 is a one off product, or if there's going to be an entire product stack that comes with it.
For me, though, I'm probably buying a great big heap of nothing. I'd love to get a new Radeon and shove my 1070s off to my "server", but unfortunately that machine only has one PCI-E slot, so that's a non starter without also buying a motherboard... an AM3 motherboard, at that. And a power supply upgrade would also be mandatory to do this. That's a whole lot of money I don't have to solve a problem that doesn't really exist... so I voted "Nothing, I am good with current GPU".