Canon 7DMKII vs Canon 5D MKIV - Image quality

[Photog82]

I know that the new 5D is not out yet but generally speaking, does the 5D have better image quality? So far for the most part I am happy with the 7DMKII and typically get very sharp photos and can zoom in a bit and still have good quality photos, depending on the lens. I've never used a full frame camera and am wondering if I should go for the 5D. Are there are side by side image comparisons of real photo situations of the 2?

I shoot portraits and scenics.

I shoot a lot of the Canon 35 1.4 MKII and love it; this may be an ignorant question but I'm assuming with full frame, I would need to get close to my subject to get the same affect as I would on my 7DMKII?