Sorry I can't be more informative as I bought the same model almost a week ago and I am not seeing this issue. Case looks the same as it did before. Bought my unit from the Microsoft Store in Toronto, ON, Canada. If I do see such discoloration developing I will report it here.
This subject is a bit outdated, but I am experiencing the same issue. Although it is not as bad as the one in the pictures, it is on its way, and I am really getting worried and annoyed about it. I only got it a bit less than 2 months ago. Did you guys resolve this issue ? Is it only dirt or is it the surface layer which gets away ? If it is a casing material issue, can the laptop be redeemed ?
Thanks for your help (hope one of you got this sorted out).
Good day !
Yes! I have a Dell Inspiron 13 7000 series I purchased late in 2014, and I noticed this yesterday. I thought the corners looked "burnt" and initially thought there was a heating/electrical issue. I'm relieved that it appears that there is (hopefully) not a heating issue, but this wear is unsightly and the laptop is only about 5-6 months old. My wear is about the same as your pictures show, but more on the corners and not on the other edges (just yet).
Bought it on march 16 2015 and exactly after 2 weeks the corners of my laptop are fading from gray to gold, contacted Dell still waiting for a clear response. Regretted buying this laptop.
I have just ordered one of these laptops and am awaiting delivery, this is making me worried.
Is this a case of the external coating wearing away, or is there dirt gathering at the edges?
No it's not dirt. The coating on the edges wears down to reveal a dark brownish color underneath. I thought it looked burnt myself but it's just the silver coating worn away.