This could open the game dev industry to more Indie developers which is a great thing. Also, Tegra 5 will make the Tablet/Phone market a viable handheld alternative and create greater competition. This is good for us as some people cannot afford High-end PC's or even consoles but can get a phone or tablet on contract.
I would also venture and say that this tech will make it possible, in time, for modders to maybe create user generated content for games much faster and easier. I will most definitely be giving this a try some time down the line.