I have a 2013 f150 xlt crew cab short bed.
I am considering a new 2015 f150 ......
Will the A.R.E. cap fit on the new f150?

 

I can verify, that because of the winged shape of the 2015 tailgate, the glass door's seamline will cause you problems.

PERHAPS calling A.R.E. and asking for a new glass door or bottom section of the door, would help you.

But that's a big fat PERHAPS with a strong chance of MAYBE.