It possibly has a bigger impact in the US. Apparently in the US public school system Autism means you get access to various services - you don't if you are an Aspie. I don't know if there is/will be a diference between the two as far as education in the UK or if each child is assessed individually.
If the change happens I think we come out as High Functioning Autism..slightly more prosaic a title.Basically it becomes a spectrum.
I think there has been some tinkering with the criteria. How much psychiatrists will actually change their way of diagnosing should the criteria change in the UK remains to be seen.