Should I upgrade to 5diii Locked

Hello. I currently have the 7d which I am very happy with using it to shoot my daughter in sports as well as landscapes and indoors.  so I really do not have a main niche of say just sports. i am thinking about upgrading to a full frame but I am also curious as to what the new 7d may look like(rumor). My main question is will I see a noticeable difference in pictures from my 7d vs the 5d3. I currently have 2 lenses that will fit the full frame body so my main expense will be body only. Help please.