Every single rumor so far points to idea of an Macbook Air getting the redesign. No Ethernet, No ODD, slim case, retina display. Doesn't that sound familiar? IMO The only line which is getting the redesign is the Air. With the 15 inch model of that line being shown on WWDC.
But most rumors suggest that it's the Macbook Pro getting the work as if we were talking about a MBA without ethernet and ODD... they already are without them. Why make a big fuss?
Although we can't know for sure until WWDC...