I think it will be a pretty sizeable jump (100% growth?). I expect the next 0.8 release will make a lot of noise when they leave Handlebars behind and really ramp up the rendering engine side of things.
Asset ordering for packages is another important issue I'd like to see rolled out for 1.0.
In terms of growth, who knows, right now it appears to be linear, but I feel a ramp up is coming.